A U.S. jet fired missiles Friday into the Sunni (search) insurgent stronghold of Fallujah (search), killing one man, witnesses and hospital officials said.

It was the fourth straight day that American warplanes have been in action over Fallujah, which is under control of militants bent on ousting coalition forces from the country. The U.S. military had no immediate comment.

Dr. Ahmed Thaer of the Fallujah General Hospital said one man was killed.