U.S. forces also raided the house of Fo'ad al-Tofi -- an official spokesman for al-Sadr -- but he was not there at the time.

CNN: Coalition estimates 50 killed in Iraqi cleric's militia

U.S. forces also raided the house of Fo'ad al-Tofi -- an official spokesman for al-Sadr -- but he was not home at the time.

CNN: Iraqi cleric's aide arrested in Najaf