A U.S. Marine (search) was killed in action in western Iraq, the military said Monday.

The Marine was killed an Anbar province (search), a Sunni Muslim-dominated area of anti-U.S. resistance that includes Fallujah, Ramadi and Qaim on the Syrian border.

The Marine was assigned to the 1st Marine Expeditionary Force (search), but was not further identified, the military said in a statement. The day of the Marine's death was not given.