An attack on the main US base near Baghdad has killed two members of the US-led forces and wounded 38 people, the US military has said.
Camp Victory, a garrison that houses the headquarters of American forces in Iraq, was hit by either a rocket or a mortar on Wednesday, officials said.
The US military said in a statement two "third country nationals" - foreign contractors who not Iraqis or Americans - were among the wounded.
Most troops stationed at Camp Victory are American but other coalition soldiers are based at the complex near Baghdad International Airport.
No further details on the attack were immediately released.
Rare attack
Camp Victory and other US bases in Iraq have frequently come under fire, but attacks with such a large number of casualties are rare.
The US military meanwhile said 13 armed fighters, including three members of al-Qaeda in Iraq responsibile for the assassination of a Sunni Arab preacher, have been killed in an air strike.
The strike on Wednesday west of Baghdad came hours after the imam, identified as Abu Bilal, was killed.
"Three of the al-Qaeda in Iraq members killed in a coalition air strike Wednesday following their assassination of a local imam have been identified as Abu Rami, Ammar Fadhil Kadhim and Fadil Salman," the military said.