One US soldier was killed and another wounded when a roadside bomb struck a US patrol west of Baghdad, the US military said in a statement on Friday.
The attack targeted a combat logistics patrol at about 9:00 p.m. (1700 GMT) on Thursday in an area, about 70 km west of Baghdad, on the main road between restive cities of Fallujah and Ramadi, the statement said.
The name of the killed soldier was being withheld pending notification of next of kin, it added.
Fighting in the Sunni Muslim enclave in western Anbar province still flares as insurgents launched sporadic attacks on US and Iraqi forces.
About 1,910 US soldiers have been killed in Iraq since the US- led invasion in March 2003.