Prisoners murdered at US base in Afghanistan

The deaths of two prisoners at a US base in Afghanistan have been ruled as murder by military coroners.

A US Army investigation of the deaths is continuing, says Colonel Roger King, a spokesman for US forces at the base in Bagram.

The two prisoners died on December 3 and December 10 at the makeshift prison in the US compound at the Afghan base north of Kabul.

The post mortems that labelled the deaths as "homicides" found the men had been beaten, and one had a blood clot in his lung, Colonel King says.

US forces are holding an unknown number of prisoners at Bagram.