Iraqi security officials say a car bomb attack in eastern Baghdad has killed at least two civilians and left at least four others wounded.
Officials say militants Saturday detonated the car bomb near a joint U.S.-Iraqi military patrol.
There are unconfirmed reports of other attacks in Baghdad and the northern city of Mosul.
In a separate development, the U.S. military says four American soldiers were killed Thursday in a bomb attack in the northern town of Tall Afar.
On Friday, a string of car bombs blew up in and around Baghdad Friday, killing at least 30 people and wounding dozens more. U.S. military officials say Iraqi civilians and police were the targets.
The U.S.-led coalition in Iraq calls Friday's bombings a desperate attempt by terrorists to discredit the new Iraqi government.