DULUTH, MN (KDAL) - The Duluth Police Department is searching for a man who held up the U-S Bank at 2000 West Superior Street about 10:30 Tuesday morning. The initial investigation shows that the suspect entered the bank, demanding money from a teller and indicating the white shopping bag he carried contained a gun although no gun was seen. The suspect left with an undisclosed amount of cash and was last seen on foot westbound on Superior Street. The suspect is described as a black male about 5 feet 10 inches tall with some facial hair and wearing a dark coat and baseball cap. Anyone with information is asked to call 911.