London Westminster shooting: Woman dead and others injured in 'terrorist incident'
London police have confirmed the incident at Westminster is being treated as terrorist as it has been confirmed one woman is dead and others hurt, some with "catastrophic" injuries, in the attack.
A policeman has been stabbed and his attacker shot by officers after a major terrorist incident at the Houses of Parliament.
The attacker mowed down several pedestrians as he drove a 4x4 car across Westminster Bridge before crashing it into railings then running through the gates of the Palace of Westminster and stabbing the officer.
Eyewitnesses said he was shot by police as he approached a second officer clutching his knife.
He left a trail of destruction as paramedics tended to his victims on the bridge and at the gate.
Prime Minister Theresa May was seen being ushered into a silver Jaguar in the grounds of the palace as what sounded like gunfire rang out at around 2.45pm. A Downing Street source confirmed she was "OK".
Scotland Yard urged people to avoid the area, in a statement it said: "Officers - including firearms officers - remain on the scene and we are treating this as a terrorist incident until we know otherwise.
"We thank the public for their assistance."
London Ambulance Service "declared a major incident", saying: "We were called at 2.40pm to Westminster Bridge to reports of an incident, with the first crew arriving within six minutes.
"We have sent a number of resources to the scene including ambulance crews, London's Air Ambulance and our Hazardous Area Response Team.
"We are working closely with other members of the emergency services at the scene, with our priority being to ensure patients receive the medical help they need as quickly as possible.
"We have declared a major incident and our priority is to assess patients and ensure that they are treated and taken to hospital as soon as possible.
"As we are very busy dealing with this incident, we would ask the public to only call us in a genuine emergency."
MPs and staff locked inside Houses of Parliament sent messages to friends and family to let them know they were safe.
Labour MP Jon Trickett thanked the police and tweeted: "Democracy will not be intimidated by terror."
Locked in the Commons Chamber but my heart goes out to the police officers, those hit by the car on the bridge and their families. Stay safe— David Lammy (@DavidLammy) March 22, 2017
Police response instant. Heard commotion, looked round. Police weapons drawn, 4 shots, police ordered us to hit ground & get back, get back.— Grant Shapps (@grantshapps) March 22, 2017
Shots in Parliament Square. People running like crazy.— Sheila Noakes (@1SVN) March 22, 2017
Armed officers ordered myself and Security Minister into lobby at gun point. Terrifying— Anna Soubry MP (@Anna_Soubry) March 22, 2017
Colleagues taken out of the library at gun point by counter terrorist armed police officers.— Anna Soubry MP (@Anna_Soubry) March 22, 2017
A car on Westminster Bridge has just mowed down at least 5 people. pic.twitter.com/tdCR9I0NgJ— Radosław Sikorski (@sikorskiradek) March 22, 2017
Walking into Parliament when attack occurred. Police excellent. Got us onto ground then led to safety. Terrorism will never defeat democracy https://t.co/bnq9evLJw6— Jeffrey Donaldson MP (@J_Donaldson_MP) March 22, 2017
Commons lock down. MPs in chamber— Nigel Dodds (@NigelDoddsDUP) March 22, 2017
Helicopter landing in Parliament Square pic.twitter.com/TKHJCWsUOG— Nick Eardley (@nickeardleybbc) March 22, 2017
This is the moment Parliament was suspended as "sounds similar to gunfire" were heard outside pic.twitter.com/to6PPxkNqL— Sky News (@SkyNews) March 22, 2017