Belfast Telegraph

Wednesday 28 January 2015

Boston lockdown as bomber hunted

Police with guns drawn search for a suspect on April 19, 2013 in Watertown, Massachusetts.  Earlier, a Massachusetts Institute of Technology campus police officer was shot and killed late Thursday night at the school's campus in Cambridge. A short time later, police reported exchanging gunfire with alleged carjackers in Watertown, a city near Cambridge
Police with guns drawn search for a suspect on April 19, 2013 in Watertown, Massachusetts. Earlier, a Massachusetts Institute of Technology campus police officer was shot and killed late Thursday night at the school's campus in Cambridge. A short time later, police reported exchanging gunfire with alleged carjackers in Watertown, a city near Cambridge
Police have released a CCTV image of a man - referred to as 'Suspect number two' - taken from a convenience store last night. Police say the man is a suspect in the Boston Marathon bombing and was wearing a white hat in photos taken at the race
New image shows a man closely resembling suspect Number Two in the Boston Marathon bombings. Photograph by David Green.
The FBI has released images of two suspects in the Boston Marathon bombings which left three dead and over 170 injured
This image released by the FBI on Thursday, April 18, 2013, shows in a image from video what the FBI are calling suspect number 1, front, in black cap, and suspect number 2, in white cap, back right, walking near each other through the crowd in Boston on Monday, April 15, 2013, before the explosions at the Boston Marathon. (AP Photo/FBI)
BOSTON, MA - APRIL 15: In this image released by the Federal Bureau of Investigation (FBI) on April 18, 2013, a suspect in the Boston Marathon bombing walks near the marathon finish line on April 15, 2013 in Boston, Massachusetts. The twin bombings at the 116-year-old Boston race resulted in the deaths of three people with more than 170 others injured. (Photo provided by FBI via Getty Images)
BOSTON, MA - APRIL 15: In this image released by the Federal Bureau of Investigation (FBI) on April 18, 2013, two suspects in the Boston Marathon bombing walk near the marathon finish line on April 15, 2013 in Boston, Massachusetts. The twin bombings at the 116-year-old Boston race resulted in the deaths of three people with more than 170 others injured. (Photo provided by FBI via Getty Images)
BOSTON, MA - APRIL 15: In this image released by the Federal Bureau of Investigation (FBI) on April 18, 2013, a suspect in the Boston Marathon bombing walks near the marathon finish line on April 15, 2013 in Boston, Massachusetts. The twin bombings at the 116-year-old Boston race resulted in the deaths of three people with more than 170 others injured. (Photo provided by FBI via Getty Images)
BOSTON, MA - APRIL 15: In this image released by the Federal Bureau of Investigation (FBI) on April 18, 2013, two suspects in the Boston Marathon bombing walk near the marathon finish line on April 15, 2013 in Boston, Massachusetts. The twin bombings at the 116-year-old Boston race resulted in the deaths of three people with more than 170 others injured. (Photo provided by FBI via Getty Images)
BOSTON, MA - APRIL 15: In this image released by the Federal Bureau of Investigation (FBI) on April 18, 2013, a suspect in the Boston Marathon bombing walks near the marathon finish line on April 15, 2013 in Boston, Massachusetts. The twin bombings at the 116-year-old Boston race resulted in the deaths of three people with more than 170 others injured. (Photo provided by FBI via Getty Images)
BOSTON, MA - APRIL 15: In this image released by the Federal Bureau of Investigation (FBI) on April 18, 2013, a suspect in the Boston Marathon bombing walks near the marathon finish line on April 15, 2013 in Boston, Massachusetts. The twin bombings at the 116-year-old Boston race resulted in the deaths of three people with more than 170 others injured. (Photo provided by FBI via Getty Images)
BOSTON, MA - APRIL 15: In this image released by the Federal Bureau of Investigation (FBI) on April 18, 2013, a suspect in the Boston Marathon bombing walks near the marathon finish line on April 15, 2013 in Boston, Massachusetts. The twin bombings at the 116-year-old Boston race resulted in the deaths of three people with more than 170 others injured. (Photo provided by FBI via Getty Images)
BOSTON, MA - APRIL 15: In this image released by the Federal Bureau of Investigation (FBI) on April 18, 2013, two suspects in the Boston Marathon bombing walk near the marathon finish line on April 15, 2013 in Boston, Massachusetts. The twin bombings at the 116-year-old Boston race resulted in the deaths of three people with more than 170 others injured. (Photo provided by FBI via Getty Images)
President Barack Obama exits after attending an interfaith prayer service for victims of the Boston Marathon attack titled "Healing Our City," at the Cathedral of the Holy Cross on April 18, 2013 in Boston, Massachusetts
President Barack Obama and first lady Michelle Obama enter an interfaith prayer service for victims of the Boston Marathon attack titled "Healing Our City," at the Cathedral of the Holy Cross on April 18, 2013 in Boston, Massachusetts
President Barack Obama and first lady Michelle Obama enter an interfaith prayer service for victims of the Boston Marathon attack titled "Healing Our City," at the Cathedral of the Holy Cross on April 18, 2013 in Boston, Massachusetts
President Barack Obama and first lady Michelle Obama listen during an interfaith healing service at the Cathedral of the Holy Cross in Boston, Thursday, April 18
Signs, flowers and candles make up a makeshift memorial at the corner of Berkeley and Boylston Street for the victims of the Boston Marathon bombing
Lizzie Lee, 56, of Lynwood, Wash., who was participating in her first Boston Marathon and 11th overall, holds a candle and a flower at Boston Common during a vigil for the victims of the Boston Marathon
Mourners attend candlelight vigil for Martin Richard at Garvey Park, near Richard's home in the Dorchester section of Boston
People gather with candles during a vigil for eight-year-old Martin Richard, from Dorchester, who was killed by an explosion near the finish line of the Boston Marathon
BOSTON, MA - APRIL 16: A man with an American flag on his hat attends a vigil for eight-year-old Martin Richard, from Dorchester, who was killed by an explosion near the finish line of the Boston Marathon on April 16, 2013 at Garvey Park in Boston, Massachusetts. The twin bombings resulted in the deaths of three people and hospitalized at least 128. The bombings at the 116-year-old Boston race resulted in heightened security across the nation with cancellations of many professional sporting events as authorities search for a motive to the violence. (Photo by Jared Wickerham/Getty Images)
Injured people and debris lie on the sidewalk near the Boston Marathon finish line following an explosion in Boston, Monday, April 15, 2013. (AP Photo/MetroWest Daily News, Ken McGagh) MANDATORY CREDIT
In this image from video provided by WBZ TV, spectators and runners run from what was described as twin explosions that shook the finish line of the Boston Marathon, Monday, April 15, 2013, in Boston. Two explosions shattered the euphoria of the Boston Marathon finish line on Monday, sending authorities out on the course to carry off the injured while the stragglers were rerouted away from the smoking site of the blasts. (AP Photo/WBZTV) MANDATORY CREDIT
Police officers react to a second explosion at the finish line of the Boston Marathon in Boston, Monday, April 15, 2013
A Los Angeles Sheriffs Counter Terrorism Unit officer carries an AR-15 assault rifle, as he patrols the entrance to Union Station in Los Angeles Monday, April 15, 2013. The city increased security following bomb explosions in Boston that killed two people and injured more than 80 near the crowded finish line of the Boston Marathon. (AP Photo/Damian Dovarganes)
Medical workers aid injured people at the 2013 Boston Marathon following an explosion in Boston, Monday, April 15, 2013. Two explosions shattered the euphoria of the Boston Marathon finish line on Monday, sending authorities out on the course to carry off the injured while the stragglers were rerouted away from the smoking site of the blasts. (AP Photo/The Boston Globe, David L Ryan)
Boston police on bicycles patrol on Commonwealth Avenue following the explosions at the finish line of the Boston Marathon in Boston, Monday, April 15, 2013. Two bombs exploded at the Boston Marathon finish line Monday killing two people and injuring dozens. (AP Photo/Michael Dwyer)
Medical workers aid injured people at the finish line of the 2013 Boston Marathon following an explosion in Boston, Monday, April 15, 2013. (AP Photo/Charles Krupa)
A firefighter tends to an injured man following an explosion near the finish line of the Boston Marathon in Boston, Monday, April 15, 2013. (AP Photo/Michael Dwyer)
A Boston police officer clears Boylston Street following an explosion at the finish line of the 2013 Boston Marathon in Boston, Monday, April 15, 2013. Two explosions shattered the euphoria at the finish line on Monday, sending authorities out on the course to carry off the injured while the stragglers were rerouted away from the smoking site of the blasts. (AP Photo/Charles Krupa)
A Boston police officer wheels in injured boy down Boylston Street as medical workers carry an injured runner following an explosion during the 2013 Boston Marathon in Boston, Monday, April 15, 2013. Two explosions shattered the euphoria at the marathon's finish line on Monday, sending authorities out on the course to carry off the injured while the stragglers were rerouted away from the smoking site of the blasts. (AP Photo/Charles Krupa)
A flag flies over the finish line as medical workers aid injured people following an explosion at the finish line of the 2013 Boston Marathon in Boston, Monday, April 15, 2013. Two explosions shattered the euphoria at the finish line, sending authorities out on the course to carry off the injured while the stragglers were rerouted away from the smoking site of the blasts. (AP Photo/Charles Krupa)
A photographer captures the moment an explosion goes off close to the finish line of the Boston Marathon
Medical workers wheel the injured across the finish line during the 2013 Boston Marathon following an explosion in Boston, Monday, April 15, 2013. Two explosions shattered the euphoria of the Boston Marathon finish line on Monday, sending authorities out on the course to carry off the injured while the stragglers were rerouted away from the smoking site of the blasts. (AP Photo/Charles Krupa)
Medical workers aid injured people at the finish line of the 2013 Boston Marathon following an explosion in Boston, Monday, April 15, 2013. (AP Photo/Charles Krupa)
Medical workers and authorities work on the scene near the finish line of the 2013 Boston Marathon following an explosion in Boston, Monday, April 15, 2013. (AP Photo/WCVB-TV/ABC) MANDATORY CREDIT
Medical workers aid injured people at the finish line of the 2013 Boston Marathon following an explosion in Boston, Monday, April 15, 2013. Two explosions shattered the euphoria of the Boston Marathon finish line on Monday, sending authorities out on the course to carry off the injured while the stragglers were rerouted away from the smoking site of the blasts. (AP Photo/Charles Krupa)
BOSTON, MA - APRIL 15: A runner embraces another woman near Kenmore Square after two bombs exploded during the 117th Boston Marathon on April 15, 2013 in Boston, Massachusetts. Two people are confirmed dead and at least 23 injured after two explosions went off near the finish line to the marathon. (Photo by Alex Trautwig/Getty Images)
BOSTON, MA - APRIL 15: State police guard an area near Kenmore Square after two bombs exploded during the 117th Boston Marathon on April 15, 2013 in Boston, Massachusetts. Two people are confirmed dead and at least 23 injured after two explosions went off near the finish line to the marathon. (Photo by Alex Trautwig/Getty Images)
BOSTON, MA - APRIL 15: A member of the bomb squad investigates a suspicious item on the road near Kenmore Square after two bombs exploded during the 117th Boston Marathon on April 15, 2013 in Boston, Massachusetts. Two people are confirmed dead and at least 23 injured after two explosions went off near the finish line to the marathon. (Photo by Alex Trautwig/Getty Images)
BOSTON, MA - APRIL 15: A man is loaded into an ambulance after he was injured by one of two bombs exploded during the 117th Boston Marathon near Copley Square on April 15, 2013 in Boston, Massachusetts. Two people are confirmed dead and at least 23 injured after two explosions went off near the finish line to the marathon. (Photo by Jim Rogash/Getty Images)
BOSTON, MA - APRIL 15: A woman is loaded into an ambulance after he was injured by one of two bombs exploded during the 117th Boston Marathon near Copley Square on April 15, 2013 in Boston, Massachusetts. Two people are confirmed dead and at least 23 injured after two explosions went off near the finish line to the marathon. (Photo by Jim Rogash/Getty Images)
BOSTON, MA - APRIL 15: A man is loaded into an ambulance after he was injured by one of two bombs exploded during the 117th Boston Marathon near Copley Square on April 15, 2013 in Boston, Massachusetts. Two people are confirmed dead and at least 23 injured after two explosions went off near the finish line to the marathon. (Photo by Jim Rogash/Getty Images)
BOSTON, MA - APRIL 15: A man is loaded into an ambulance after he was injured by one of two bombs exploded during the 117th Boston Marathon near Copley Square on April 15, 2013 in Boston, Massachusetts. Two people are confirmed dead and at least 23 injured after two explosions went off near the finish line to the marathon. (Photo by Jim Rogash/Getty Images)
BOSTON, MA - APRIL 15: A man is loaded into an ambulance after he was injured by one of two bombs exploded during the 117th Boston Marathon near Copley Square on April 15, 2013 in Boston, Massachusetts. Two people are confirmed dead and at least 23 injured after two explosions went off near the finish line to the marathon. (Photo by Jim Rogash/Getty Images)
BOSTON, MA - APRIL 15: A man is loaded into an ambulance after he was injured by one of two bombs exploded during the 117th Boston Marathon near Copley Square on April 15, 2013 in Boston, Massachusetts. Two people are confirmed dead and at least 23 injured after two explosions went off near the finish line to the marathon. (Photo by Jim Rogash/Getty Images)
BOSTON, MA - APRIL 15: Massachusetts State Police guard an area near Kenmore Square after two bombs exploded during the 117th Boston Marathon on April 15, 2013 in Boston, Massachusetts. Two people are confirmed dead and at least 23 injured after two explosions went off near the finish line to the marathon. (Photo by Alex Trautwig/Getty Images)
BOSTON, MA - APRIL 15: Massachusetts State Police guard an area near Kenmore Square after two bombs exploded during the 117th Boston Marathon on April 15, 2013 in Boston, Massachusetts. Two people are confirmed dead and at least 23 injured after two explosions went off near the finish line to the marathon. (Photo by Alex Trautwig/Getty Images)
BOSTON, MA - APRIL 15: People gather near Kenmore Square after two bombs exploded during the 117th Boston Marathon on April 15, 2013 in Boston, Massachusetts. Two people are confirmed dead and at least 23 injured after two explosions went off near the finish line to the marathon. (Photo by Alex Trautwig/Getty Images)
BOSTON, MA - APRIL 15: Runners react near Kenmore Square after two bombs exploded during the 117th Boston Marathon on April 15, 2013 in Boston, Massachusetts. Two people are confirmed dead and at least 23 injured after two explosions went off near the finish line to the marathon. (Photo by Alex Trautwig/Getty Images)
BOSTON, MA - APRIL 15: Runners react near Kenmore Square after two bombs exploded during the 117th Boston Marathon on April 15, 2013 in Boston, Massachusetts. Two people are confirmed dead and at least 23 injured after two explosions went off near the finish line to the marathon. (Photo by Alex Trautwig/Getty Images)
BOSTON, MA - APRIL 15: Runners react near Kenmore Square after two bombs exploded during the 117th Boston Marathon on April 15, 2013 in Boston, Massachusetts. Two people are confirmed dead and at least 23 injured after two explosions went off near the finish line to the marathon. (Photo by Alex Trautwig/Getty Images)
BOSTON, MA - APRIL 15: Boston Police guard an area at the one mile checkpoint near Kenmore Square after two bombs exploded during the 117th Boston Marathon on April 15, 2013 in Boston, Massachusetts. Two people are confirmed dead and at least 23 injured after two explosions went off near the finish line to the marathon. (Photo by Alex Trautwig/Getty Images)
BOSTON, MA - APRIL 15: Boston Police guard an area near Kenmore Square after two bombs exploded during the 117th Boston Marathon on April 15, 2013 in Boston, Massachusetts. Two people are confirmed dead and at least 23 injured after two explosions went off near the finish line to the marathon. (Photo by Alex Trautwig/Getty Images)
BOSTON, MA - APRIL 15: Runner gather near Kenmore Square after two bombs exploded during the 117th Boston Marathon on April 15, 2013 in Boston, Massachusetts. Two people are confirmed dead and at least 23 injured after two explosions went off near the finish line to the marathon. (Photo by Alex Trautwig/Getty Images)
BOSTON, MA - APRIL 15: Runners talk to Boston Police near Kenmore Square after two bombs exploded during the 117th Boston Marathon on April 15, 2013 in Boston, Massachusetts. Two people are confirmed dead and at least 28 injured after at least two explosions went off near the finish line to the marathon. (Photo by Alex Trautwig/Getty Images)
BOSTON, MA - APRIL 15: People look on after two bombs exploded during the 117th Boston Marathon on April 15, 2013 in Boston, Massachusetts. Two people are confirmed dead and at least 28 injured after at least two explosions went off near the finish line to the marathon. (Photo by Darren McCollester /Getty Images)
BOSTON, MA - APRIL 15: An armed state trooper takes position on Dartmouth and Stuart street, near the finish line after two bombs exploded during the 117th Boston Marathon on April 15, 2013 in Boston, Massachusetts. Two people are confirmed dead and at least 28 injured after at least two explosions went off near the finish line to the marathon. (Photo by Darren McCollester/Getty Images)
BOSTON, MA - APRIL 15: A woman is helped from the scene near the finish line after two bombs exploded during the 117th Boston Marathon on April 15, 2013 in Boston, Massachusetts. Two people are confirmed dead and at least 28 injured after at least two explosions went off near the finish line to the marathon. (Photo by Darren McCollester/Getty Images)
BOSTON, MA - APRIL 15: State police guard an area near Kenmore Square after two bombs exploded during the 117th Boston Marathon on April 15, 2013 in Boston, Massachusetts. Two people are confirmed dead and at least 23 injured after two explosions went off near the finish line to the marathon. (Photo by Alex Trautwig/Getty Images)
One of the blast sites on Boylston Street near the finish line of the 2013 Boston Marathon is investigated and guarded by police in the wake of two blasts in Boston Monday, April 15, 2013. (AP Photo/Elise Amendola)
This photo provided by Bruce Mendelsohn shows the scene after two explosions occurred during the 2013 Boston Marathon in Boston, Monday, April 15, 2013. Two explosions shattered the euphoria of the Boston Marathon finish line on Monday, sending authorities out on the course to carry off the injured while the stragglers were rerouted away from the smoking site of the blasts. (AP Photo/ Bruce Mendelsohn) MANDATORY CREDIT
A Los Angeles Sheriffs Counter Terrorism Unit deputy patrols Union Station before the start of Los Angeles Dodgers game in Los Angeles Monday, April 15, 2013. The city increased security following bomb explosions in Boston that killed two people and injured more than 80 near the crowded finish line of the Boston Marathon. (AP Photo/Damian Dovarganes)
An injured person is helped on the sidewalk near the Boston Marathon finish line following an explosion in Boston, Monday, April 15, 2013. (AP Photo/MetroWest Daily News, Ken McGagh) MANDATORY CREDIT
Injured people and debris lie on the sidewalk near the Boston Marathon finish line following an explosion in Boston, Monday, April 15, 2013. (AP Photo/MetroWest Daily News, Ken McGagh) MANDATORY CREDIT
A Boston Marathon competitor and Boston police run from the area of an explosion near the finish line in Boston, Monday, April 15, 2013. (AP Photo/MetroWest Daily News, Ken McGagh) MANDATORY CREDIT
BOSTON, MA - APRIL 16: A Boston police officer stands near the scene of a twin bombing at the Boston Marathon, on April 16, 2013 in Boston, Massachusetts. Three people are confirmed dead and at least 141 injured after the explosions went off near the finish line of the marathon yesterday. (Photo by Spencer Platt/Getty Images)
BOSTON, MA - APRIL 16: National Guard soldiers stand near the scene of a twin bombing at the Boston Marathon, on April 16, 2013 in Boston, Massachusetts. Three people are confirmed dead and at least 141 injured after the explosions went off near the finish line of the marathon yesterday. (Photo by Spencer Platt/Getty Images)
BOSTON, MA - APRIL 16: A piece of debris rests against a police barricade near the scene of a twin bombing at the Boston Marathon, on April 16, 2013 in Boston, Massachusetts. Three people are confirmed dead and at least 141 injured after the explosions went off near the finish line of the marathon yesterday. (Photo by Spencer Platt/Getty Images)
BOSTON, MA - APRIL 16: Unclaimed food sits near the scene of a twin bombing at the Boston Marathon, on April 16, 2013 in Boston, Massachusetts. Three people are confirmed dead and at least 141 injured after the explosions went off near the finish line of the marathon yesterday. (Photo by Spencer Platt/Getty Images)
BOSTON, MA - APRIL 16: A Boston police officer stands near the scene of a twin bombing at the Boston Marathon, on April 16, 2013 in Boston, Massachusetts. Three people are confirmed dead and at least 141 injured after the explosions went off near the finish line of the marathon yesterday. (Photo by Spencer Platt/Getty Images)
BOSTON, MA - APRIL 16: Unclaimed finish line bags are left near the scene of a twin bombing at the Boston Marathon, on April 16, 2013 in Boston, Massachusetts. Three people are confirmed dead and at least 141 injured after the explosions went off near the finish line of the marathon yesterday. (Photo by Spencer Platt/Getty Images)
BOSTON, MA - APRIL 16: Boston Police stand near the scene of a twin bombing at the Boston Marathon, on April 16, 2013 in Boston, Massachusetts. Three people are confirmed dead and at least 141 injured after the explosions went off near the finish line of the marathon yesterday. The bombings at the 116-year-old Boston race, resulted in heightened security across the nation with cancellations of many professional sporting events as authorities search for a motive to the violence. (Photo by Spencer Platt/Getty Images)
BOSTON, MA - APRIL 16: A National Guard soldier stands near the scene of a twin bombing at the Boston Marathon, on April 16, 2013 in Boston, Massachusetts. Three people are confirmed dead and at least 141 injured after the explosions went off near the finish line of the marathon yesterday. (Photo by Spencer Platt/Getty Images)
BOSTON, MA - APRIL 16: Debris and litter cover an empty street near the scene of a twin bombing at the Boston Marathon, on April 16, 2013 in Boston, Massachusetts. Three people are confirmed dead and at least 141 injured after the explosions went off near the finish line of the marathon yesterday. (Photo by Spencer Platt/Getty Images)
BOSTON, MA - APRIL 16: A Boston police officer stands near the scene of a twin bombing at the Boston Marathon, on April 16, 2013 in Boston, Massachusetts. Three people are confirmed dead and at least 141 injured after the explosions went off near the finish line of the marathon yesterday. (Photo by Spencer Platt/Getty Images)
BOSTON, MA - APRIL 16: Unclaimed finish line bags are viewed near the scene of a twin bombing at the Boston Marathon, on April 16, 2013 in Boston, Massachusetts. Three people are confirmed dead and at least 141 injured after the explosions went off near the finish line of the marathon yesterday. (Photo by Spencer Platt/Getty Images)
NEW YORK, NY - APRIL 15: A performer is dressed as Lady Liberty in Times Square in Manhattan on April 15, 2013 in New York City. The city has announced it will implement heightened security measures in response to today's bombings at the Boston Marathon. (Photo by Mario Tama/Getty Images)
BOSTON, MA - APRIL 16: A man walks by portable toilets near the scene of a twin bombing at the Boston Marathon, on April 16, 2013 in Boston, Massachusetts. Three people are confirmed dead and at least 141 injured after the explosions went off near the finish line of the marathon yesterday. The bombings at the 116-year-old Boston race, resulted in heightened security across the nation with cancellations of many professional sporting events as authorities search for a motive to the violence. (Photo by Spencer Platt/Getty Images)
NEW YORK, NY - APRIL 15: People walk through Grand Central Terminal in Manhattan on April 15, 2013 in New York City. The city has announced it will implement heightened security measures in response to today's bombings at the Boston Marathon. (Photo by Mario Tama/Getty Images)
NEW YORK, NY - APRIL 15: A New York Police Department officer inspects a man's bag in Grand Central Terminal in Manhattan on April 15, 2013 in New York City. The city has announced it will implement heightened security measures in response to today's bombings at the Boston Marathon. (Photo by Mario Tama/Getty Images)
BOSTON, MA - APRIL 15: A woman is loaded into an ambulance after he was injured by one of two bombs exploded during the 117th Boston Marathon near Copley Square on April 15, 2013 in Boston, Massachusetts. Two people are confirmed dead and at least 23 injured after two explosions went off near the finish line to the marathon. (Photo by Jim Rogash/Getty Images)
NEW YORK, NY - APRIL 15: A New York Police Department officer inspects a man's bag in Grand Central Terminal in Manhattan on April 15, 2013 in New York City. The city has announced it will implement heightened security measures in response to today's bombings at the Boston Marathon. (Photo by Mario Tama/Getty Images)
BOSTON, MA - APRIL 15: A swat team arrives at the corner of Stuart Street and Dartmouth Street after two explosive devices detonated at the finish line of the 117th Boston Marathon on April 15, 2013 in Boston, Massachusetts. Two people are confirmed dead and at least 23 injured after two explosions went off near the finish line to the marathon.
BOSTON, MA - APRIL 15: Runners listen to directions from a Boston Police officer at the corner of Stuart Street and Dartmouth Street after two explosive devices detonated at the finish line of the 117th Boston Marathon on April 15, 2013 in Boston, Massachusetts. Two people are confirmed dead and at least 23 injured after two explosions went off near the finish line to the marathon.
BOSTON, MA - APRIL 15: The outter perimeter near Massachusetts Avenue and Newbury Street is secured by police after two explosive devices detonated at the finish line of the 117th Boston Marathon on April 15, 2013 in Boston, Massachusetts. Two people are confirmed dead and at least 23 injured after two explosions went off near the finish line to the marathon. (Photo by Alex Trautwig/Getty Images)
WASHINGTON, DC - APRIL 15: U.S. President Barack Obama speaks about today's bombing at the Boston Marathon, April 15, 2013 in Washington, DC. Two people are confirmed dead and at least 28 injured after at least two explosions went off near the finish line to the marathon. (Photo by Mark Wilson/Getty Images)
WASHINGTON, DC - APRIL 15: U.S. President Barack Obama speaks about today's bombing at the Boston Marathon, April 15, 2013 in Washington, DC. Two people are confirmed dead and at least 28 injured after at least two explosions went off near the finish line to the marathon. (Photo by Mark Wilson/Getty Images)
BOSTON, MA - APRIL 15: Runners listen to directions from a Boston Police officer at the corner of Stuart Street and Dartmouth Street after two explosive devices detonated at the finish line of the 117th Boston Marathon on April 15, 2013 in Boston, Massachusetts. Two people are confirmed dead and at least 23 injured after two explosions went off near the finish line to the marathon.
President Barack Obama pauses as he begins to speak in the James Brady Press Briefing Room at the White House in Washington, Monday, April 15, 2013, following the explosions at the Boston Marathon. (AP Photo/Charles Dharapak)
Blood from victims covers the sidewalk on Boylston Street, at the site of an explosion during the 2013 Boston Marathon in Boston, Monday, April 15, 2013. At the right foreground is a folding chair with the design of an American flag on the cover. Two explosions shattered the euphoria of the Boston Marathon finish line on Monday, sending authorities out on the course to carry off the injured while the stragglers were rerouted away from the smoking site of the blasts. (AP Photo/Charles Krupa)
One of the blast sites on Boylston Street near the finish line of the 2013 Boston Marathon is investigated by a person in a protective suit in the wake of two blasts in Boston, Monday, April 15, 2013. (AP Photo/Elise Amendola)
BOSTON, MA - APRIL 15: A woman looks at the blood on her hands as she is loaded into an ambulance after being injured after two bombs exploded on the marathon route on April 15, 2013 in Boston, Massachusetts. Two people are confirmed dead and at least 23 injured after two explosions went off near the finish line to the marathon. (Photo by Jim Rogash/Getty Images)
BOSTON, MA - APRIL 15: People rush out of the way on the corner of Stuart and Dartmouth St., near the finish line after two bombs exploded during the 117th Boston Marathon on April 15, 2013 in Boston, Massachusetts. Two people are confirmed dead and at least 28 injured after at least two explosions went off near the finish line to the marathon. (Photo by Darren McCollester/Getty Images)
BOSTON, MA - APRIL 15: A woman looks on as runners pass near Kenmore Square after two bombs exploded during the 117th Boston Marathon on April 15, 2013 in Boston, Massachusetts. Two people are confirmed dead and at least 28 injured after at least two explosions went off near the finish line to the marathon. (Photo by Alex Trautwig/Getty Images)
BOSTON, MA - APRIL 15: A man is loaded into an ambulance after he was injured by one of two bombs exploded during the 117th Boston Marathon near Copley Square on April 15, 2013 in Boston, Massachusetts. Two people are confirmed dead and at least 23 injured after two explosions went off near the finish line to the marathon. (Photo by Jim Rogash/Getty Images)
BOSTON, MA - APRIL 15: Police and runners stand near Kenmore Square after two bombs exploded during the 117th Boston Marathon on April 15, 2013 in Boston, Massachusetts. Two people are confirmed dead and at least 28 injured after at least two explosions went off near the finish line to the marathon. (Photo by Alex Trautwig/Getty Images)
BOSTON, MA - APRIL 15: People gather near Kenmore Square after two bombs exploded during the 117th Boston Marathon on April 15, 2013 in Boston, Massachusetts. Two people are confirmed dead and at least 23 injured after two explosions went off near the finish line to the marathon. (Photo by Alex Trautwig/Getty Images)
EDS NOTE: GRAPHIC CONTENT - Medical workers runs an injured man past the finish line the 2013 Boston Marathon following an explosion in Boston, Monday, April 15, 2013. Two explosions shattered the euphoria of the Boston Marathon finish line on Monday, sending authorities out on the course to carry off the injured while the stragglers were rerouted away from the smoking site of the blasts. (AP Photo/Charles Krupa)
An unidentified Boston Marathon runner leaves the course crying near Copley Square following an explosion in Boston Monday, April 15, 2013. (AP Photo/Winslow Townson)
BOSTON, MA - APRIL 15: Runners and police gather near Kenmore Square after two bombs exploded during the 117th Boston Marathon on April 15, 2013 in Boston, Massachusetts. Two people are confirmed dead and at least 23 injured after two explosions went off near the finish line to the marathon. (Photo by Alex Trautwig/Getty Images)
Officers in an armoured police vehicle surround an apartment building in the hunt for the surviving suspect (AP)
Police in tactical gear take up position outside outside an apartment building in Watertown (AP)
Dzhokhar A Tsarnaev, one of the suspects in the Boston Marathon bombings. (APBoston Regional Intelligence Centre)

Almost a million residents in Boston were warned to stay indoors as thousands of armed police combed the city in a massive hunt for marathon bombing suspect Dzhokhar Tsarnaev. The ethnic Chechen's elder brother, Tamerlan, was killed in a shootout with police earlier after a night of violence in which the pair killed a university police officer and hurled explosives at police in a car chase and gun battle.

Boston is in lockdown with public transport shut and transport to and from the area is virtually shut down, with the exception of aircraft. Police SWAT teams, sharpshooters and FBI agents with armoured vehicles surrounded various buildings as police helicopters buzzed overhead.

The brothers from Dagestan, which neighbours Chechnya in southern Russia, have lived near Boston and had been in the US for about a decade, their uncle Ruslan Tsarni, of Montgomery Village, Maryland, said. He urged Dzhokhar to give himself up and described the pair as barbarians but their father Anzor Tsarnaev said Dzhokhar was a "true angel" and claimed they had been "set up".

Tamerlan Tsarnaev, 26, known to the FBI as Suspect No 1 was seen in surveillance footage in a black baseball hat. His 19-year-old brother - dubbed Suspect No. 2 was seen wearing a white, backward baseball cap in the images from Monday's deadly bombing at the marathon finish line - escaped.

Authorities gave no details on how Dzhokhar Tsarnaev escaped, but said he may have been in a Honda CRV that was found later in the morning in Boston. "We believe this man to be a terrorist," said Boston Police Commissioner Ed Davis. "We believe this to be a man who's come here to kill people."

The bombings on Monday killed three people and wounded more than 180 others, instantly raising the spectre of another terrorist attack on US soil.

The endgame - at least for Suspect No. 1 - came just hours after the FBI released photos and video of the two young men at the finish line and appealed to the public for help in identifying and capturing them. Tips came pouring in to the FBI immediately.

The city of Cambridge announced two years ago that it had awarded a 2,500 (£1,600) scholarship to Dzhokar Tsarnaev, who was listed as a senior at Cambridge Rindge & Latin School, a highly regarded public school whose alumni include Matt Damon, Ben Affleck and NBA star Patrick Ewing.

The images released by the FBI depict the two young men walking one behind the other near the finish line. Richard DesLauriers, FBI agent in charge in Boston, said Suspect No. 2 in the white hat was seen setting down a bag at the site of the second of two deadly explosions.

Authorities said surveillance tape recorded late at night showed Suspect No. 2 during a robbery of a convenience store in Cambridge, near the campus of the Massachusetts Institute of Technology, where university police officer Sean Collier, 26, was shot dead while responding to a report of a disturbance. From there a deadly car chase ended in Watertown where witnesses reported hearing multiple gunshots and explosions.

www.fbi.gov/ (FBI)

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