Rochester, MN (KROC AM News) - Rochester Police are investigating a rape reported by a woman who says she was assaulted in a downtown alley early Sunday. The Police Department was contacted shortly before 3:30 Sunday morning after the 22-year-old victim arrived at St. Mary’s Hospital seeking treatment for her injuries.

She told investigators she had been out drinking at the downtown Rochester bars and found herself in the alley behind the 3rd Street Southwest Parking Ramp, where she was sexually assaulted some time after midnight.

She described her attacker as black, about 230 pounds, with shoulder length braided hair, and wearing a black stocking cap, a black bandanna and a diamond-studded earring.