British authorities are trying to identify the masked man who executed American photojournalist James Foley in a video that has caused massive global reaction.
The man — who appears wearing all black, holding a knife, and wearing a gun holster — speaks in an accent that linguists say sounds like someone from East or South London. The video yields other clues to the man's identity, such as his height and the fact that he's left-handed.
British intelligence agencies are now trying to ascertain whether the killer is one of the roughly 500 British citizens who have left the U.K.