A British SAS soldier who died fighting the so-called Islamic State (IS) in Syria was killed by friendly fire and not by a roadside bomb, as was previously believed.
Sergeant Matt Tonroe, who served with 3rd Battalion the Parachute Regiment, died last year alongside US commando Master Sergeant Jonathan J Dunbar while on a joint operation with American special forces.
The Pentagon blamed their deaths on an improvised explosive device (IED) in a statement released days after the incident in March 2018.
But an investigation into the blast in Manbij, northern Syria, concluded Sergeant Tonroe was killed by an explosive carried by a colleague.
A Ministry of Defence spokesman said: "Sergeant Matt Tonroe died from blast injuries caused by an explosion during a military operation.
"It was initially believed that Sergeant Tonroe was killed by enemy action. However, subsequent investigation concluded that Sergeant Tonroe was killed by the accidental detonation of explosives carried by coalition forces.
"Our thoughts continue to be with Sergeant Tonroe's family and friends."
Sergeant Tonroe is the only British soldier to have been killed in active duty during operations against IS.
Following his death, Sergeant Tonroe's Commanding Officer described him as a "caring and considerate" person who was "one of life's characters".