A man was shot and killed early yesterday morning in Southwest Baltimore, police said. The victim was found in the 200 block of N. Hilton St. at 3:13 a.m. He was suffering from a gunshot wound to the head and was taken to Maryland Shock Trauma Center, where he was pronounced dead at 4 a.m., said Officer Troy Harris of the Baltimore Police Department. Police did not release the victim's name or age yesterday, pending notification of his family. Harris said investigators had no suspects and were unaware of a motive for the shooting.