Two Americans and three Afghans have been killed in a confused clash between the allies, as the Nato coalition's commander said the rash of green on blue killings was making him "mad as hell".


























Lt Gen Adrian Bradshaw, the deputy coalition commander, (pictured) said the clash may have been provoked by Taliban shooting. Photo: AFP















By Ben Farmer, Kabul



5:34PM BST 30 Sep 2012













Nato investigators were last night trying to determine what happened in the fire fight which left an American serviceman and civilian contractor dead, along with three members of the Afghan army.





The incident again highlighted the badly strained relations between the allied ranks, following a spate of killings which has seen more than 50 Nato troops shot dead by their Afghan comrades in 2012 alone.





The weekend deaths in Sydabad district of Wardak province came from an "exchange of fire", officials in Kabul said, but the situation was confused by reports of a Taliban attack at the same time.





Lt Gen Adrian Bradshaw, the deputy coalition commander, said the clash may have been provoked by Taliban shooting.





He said: "What was initially reported to have been a suspected insider attack is now understood to possibly have involved insurgent fire. The incident occurred while [a coalition unit] was manning a temporary check point in an area near an Afghan National Army (ANA) unit.