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At least eight Afghans working with US forces have been killed in a Nato air strike in north-western Afghanistan, the defence ministry in Kabul says.
Nato confirms an air strike was ordered and is investigating whether it was the cause of the deaths on Friday.
It was launched as US and Afghan forces reportedly came under insurgent attack during search operations in Badghis province for two missing US soldiers.
Five Americans and 18 Afghans were also wounded on Friday.
