A US air strike in eastern Afghanistan on Sunday killed 47 civilians, 39 of them women and children, an Afghan government investigating team says.
Reports at the time said that 20 people were killed in the airstrike in Nangarhar province. The US military said they were militants.
But local people said the dead were wedding party guests.
Correspondents say the issue of civilian casualties is hugely sensitive in Afghanistan.
President Hamid Karzai has said that no civilian casualty is acceptable.
Mr Karzai set up a nine-man commission to look into Sunday's incident.
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