Officials have confirmed an American civilian adviser was killed in a military operation in eastern Afghanistan that also left 11 suspected Taliban militants dead. The American was one of three U.S. civilians killed Saturday. Two also died in a suicide bombing in the south, along with three soldiers. Col. Thomas Collins, a spokesman for U.S.-led forces in Afghanistan, said Sunday that the adviser was killed during fighting in Kunar province, according to a report of the Associated Press. Provincial government spokesman Wasifullah Wasify says 11 Taliban militants also were killed, and four Afghan security forces, six civilians and 10 Taliban militants were wounded.