U.S. official says two Iraqis were killed Wednesday in the second straight day of mortar attacks on the heavily fortified Green Zone in Baghdad.
A U.S. embassy spokesman, Lou Fintor in Baghdad says 10 other people were wounded in the attacks, most of them Iraqis.
Separately, Iraqi police say a car bomb killed at least 32 people in a Shi'ite enclave northeast of Baghdad. Medical officials say the attack may have involved chlorine gas because many of the wounded had breathing problems.
Meanwhile, a reward of 200-thousand dollars has been offered for information on the whereabouts of three U.S. soldiers believed captured by al-Qaida-linked militants.
A U.S. military spokesman, Major General William Caldwell says U.S. and Iraqi forces are doing everything they can to find the soldiers. They have been missing since Saturday, when their unit was attacked south of Baghdad.
Four other U.S. troops were killed in the attack.
An al-Qaida-led militant group "the Islamic State of Iraq" claimed responsibility for the attack, and has demanded the United States call off its search, if the soldiers are to remain safe.