Three American soldiers were killed in action in Iraq, a military spokesperson said Monday.

Two of the soldiers were killed Sunday in Najaf (search) when troops came under attack by militiamen loyal to firebrand Shiite cleric Muqtada al-Sadr (search), Marine Capt. Carrie Batson said.

The 11th Marine Expeditionary Unit is responsible for the area, but soldiers from the Baghdad-based 1st Cavalry Division were deployed to Najaf after fighting erupted there Aug. 5.

Batson said a third soldier attached to the 1st Marine Expeditionary Force, deployed in Anbar province, was also killed Sunday. Anbar includes the volatile cities of Fallujah, Ramadi and Qaim on the Syrian border.