The U.S. military says coalition soldiers in Iraq have killed 24 insurgents who attacked a coalition convoy outside Baghdad.

Authorities say six troops and seven insurgents were wounded in the fighting, which occurred late Sunday about 30 kilometers southeast of the capital.

Elsewhere, authorities say a car bomb exploded Monday in the center of Samarra, wounding at least 10 people. The Associated Press says a truck loaded with explosives apparently detonated prematurely near a hospital.

Separately, one U.S. soldier was killed in an insurgent attack in Kirkuk, while another soldier and a Marine were killed during security operations in Al Anbar province, west of Baghdad.