British Prime Minister David Cameron will meet the top US general in Afghanistan today amid new claims over the role American forces played in the death of British aid worker Linda Norgrove.

British aid worker Linda Norgrove may have been killed by a grenade thrown by US troops trying to rescue her from Taliban kidnappers in Afghanistan, British Prime Minister David Cameron said today.

Every effort was made to safely rescue a kidnapped British aid worker who was killed in Afghanistan during an attempt to free her, military commanders and the UK government said today.

A British aid worker being held hostage in Afghanistan was killed by captors during an attempt to rescue her, British Foreign Secretary William Hague said today.