Iraqi medical officials say seven people have been killed in fresh clashes between Shi'ite fighters and U.S. forces in Baghdad's Shi'ite stronghold of Sadr City.

At least 20 other people were wounded in Thursday's fighting.

U.S. and Iraqi forces have fought fierce battles in Sadr City against Shi'ite militiamen loyal to radical cleric Moqtada al-Sadr for the past month.

Some information for this report was provided by AFP.