Iraq road ambush kills four U.S. soldiers

MOSUL, Iraq, Aug. 10 (UPI) -- A well-organized attack on a U.S. military convoy killed four soldiers and wounded six others in the northern Iraqi town of Baiji, military officials said.

The attack occurred about 11:45 p.m. Tuesday as the soldiers were investigating a rocket-propelled grenade incident in the oil-producing region, the BBC reported.

A military spokesman said an armored Humvee was hit by an anti-tank mine modified to maximize shrapnel. That caused a major fire, which was followed by small arms fire from insurgents.

U.S. commanders refer to such attacks as "complex attacks" -- attacks in which there is more than one element, such as a blast followed by small arms fire, CNN said.

Tuesday afternoon, a suicide car bomber targeted a U.S. military convoy in central Baghdad, killing one U.S. soldier and three civilians, an Iraqi police official said. Two U.S. soldiers and 50 civilians were wounded.