U.S. military officials in Iraq say a car bomb attack near a U.S. military checkpoint has killed at least three U.S. soldiers and injured six others.
The attack came Saturday, in the Iraqi town of Khaldiya, west of Baghdad. Several Iraqis were also wounded in the blast.
It was the third attack Saturday, on Iraqi and coalition forces.
Earlier, a car bomb exploded in the town of Samarra, north of Baghdad. At least three Iraqis were killed and dozens wounded. The injured included seven American soldiers hit by flying glass.
That blast occurred outside Samarra's town council building, as an American military police patrol was turning into the nearby central police station.
And in Fallujah, west of the capital, a bomb hidden by a roadside exploded as a U.S. military convoy passed. U.S. military officials said two soldiers were killed.
All three towns are in the so-called Sunni Triangle, the source of many attacks in recent months aimed at the U.S.-led coalition.
Saturday's attacks came just hours after United Nations officials arrived in Iraq to determine whether it is safe for international staff to return to the country before power is transferred to Iraqis later this year.