16 PSNI officers have died in the line of duty since force was formed
Sixteen police officers have died in the line of duty since the formation of the PSNI in 2001.
The single worst loss of life for the PSNI since the end of the Troubles was on November 23, 2008 when four officers died after their police car crashed while they responded to a call for assistance from other officers.
Constable Kevin Declan Gorman (24), part-time Constable Declan Greene (39), part-time Constable Kenneth Thomas Irvine (30) and Constable James Robert Bawn Magee (27), died at the scene near Warrenpoint in Co Down after their vehicle exploded into flames when it skidded into a wall.
The first officer to be murdered since the formation of the PSNI was 48-year-old Constable Stephen Carroll who was shot dead by republican terrorists as he responded to a 999 call in Lurgan on March 9, 2009.
Constable Carroll was shot through the rear window of his police car when he arrived at the scene at Lismore Manor.
Two years later dissident republicans murdered a new PSNI recruit, Constable Ronan Kerr.
Constable Kerr, a Catholic, was just 25 years old when he was killed after a booby-trap bomb exploded under his car outside his home in Omagh on April 2, 2011.
In February 2013 Constable Phillipa Reynolds (27) was killed when the police car she was travelling in was struck by a stolen vehicle on the Limavady Road, Londonderry.
Constable Reynolds was the back seat passenger in an unmarked police car that was hit by the stolen 4x4 vehicle that had been travelling up to 80mph.
During the Troubles, 300 RUC officers were murdered in the line of duty.
The IRA killed 277 officers, the INLA and IPLO murdered 12 and loyalist terrorists killed eight.
Three officers were murdered by unknown groups.
During that time four officers were also mistakenly killed by the security forces.