UK aid worker may have been killed by rescuers' grenade
British aid worker Linda Norgrove may have been accidentally killed by US forces during a rescue mission in Afghanistan, David Cameron has said.
International forces originally said she died on Friday when one of her captors detonated a suicide vest.
But the prime minister said new details had come to light suggesting her death may have resulted from a US grenade.
Frank Gardner reports.
11 Oct 2010