Two U.S. soldiers and an Afghan soldier were killed when an individual in an Afghan uniform opened fire on them with a machine gun in eastern Afghanistan, the U.S. military and two senior Afghan officials said on Sunday.
The shootout on Saturday wounded six U.S. service members and three Afghan soldiers.
The firefight broke out after a combined U.S. and Afghan force completed a "key-leader engagement" at the administrative headquarters of Nangarhar province's Shirzad district, a spokesman for U.S. forces in Afghanistan said.