The US military has charged four soldiers with murdering an Iraqi general who died of asphyxiation while being interrogated last November.
Major General Abid Mowhosh, who was commander of Saddam Hussein's air forces, had been detained by US forces near the Syrian border.
A US Army statement said that charges of murder and dereliction of duty were brought against two chief warrant officers, a sergeant and a specialist.
Elsewhere in Iraq, at least 26 people have been killed in three separate car bomb attacks.
Two of the attacks took place in the capital Baghdad. At least 15 people were killed and 80 others were wounded when a car bomb blew up near an entrance to the fortified Green Zone, where government ministries and foreign embassies are located.
A second car bomb exploded about an hour later as a US military convoy was passing in the east of the city, killing at least six people and wounding over a dozen.
A third car bomb exploded outside a primary school in the northern city of Mosul, killing five people, including two children.
The US military said the car, driven by two men, may have exploded prematurely.
