Five British service personnel have been killed in a helicopter crash in southern Afghanistan.
The Ministry of Defence say the crash near Kandahar air base appeared to have been a "tragic accident".
Four of those on board, three soldiers and an airman, were stationed at RAF Odiham in Hampshire. The fifth, an Army reservist, was based in London.
The families of all five servicemen have been told.
Prime Minister David Cameron said his "heart goes out to the families and friends of those killed in this terrible tragedy".
It is the first fatal British helicopter crash in the Afghan conflict.
Since the war began in 2001, 453 British service personnel have been killed.
The UK government plans to take all troops out of Afghanistan by the end of the year.