An unidentified man held up the U.S. Bank in northeast Bend this morning.  The robber was wearing a block hooded sweatshirt and white bandana over his face.  The hold up occurred just before 10 a.m. at the bank on NE Third Street.  The suspect is described as a white male adult in his 20's , about six feet fall with a thin build.  He also had a block backpack with green on it.  Nearby Marshall High School is on precautionary lockdown.