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Deadly Afghanistan checkpoint shooting 'confused'

30 September 2012 Last updated at 15:32 BST

A checkpoint shooting in eastern Afghanistan has taken the US military's death toll in the war past 2,000.

A US soldier and contractor were killed while three Afghan soldiers died and four were injured.

Initial reports from Isaf said the US soldier was believed to have been killed by a member of the Afghan security services, but the US-led coalition later said the circumstances were unclear.

Isaf's deputy commander, Lt Gen Adrian Bradshaw, described the situation as "confused".