Britain's prime minister says aid worker Linda Norgrove may have been killed by her American rescuers, rather than her Taliban captors.
David Cameron said Monday that Gen. David Petraeus had told him Norgrove was possibly killed by a grenade detonated by a member of the U.S. rescue team. But he says the full facts have not been established.
Norgrove, 36, died Friday in eastern Kunar province. Initial reports have said she died when captors detonated a bomb as NATO forces attempted to free her.
She was abducted in an ambush on Sept. 26 along with three Afghan colleagues who were later released. Six kidnappers also died in the rescue attempt.