COLUMBIA, Mo. -

Columbia police are investigating a sexual assault that occurred near the University of Missouri campus.

Around 4:20 a.m. Tuesday, city police were called to University Hospital for a possible assault.

An 18-year-old woman told officers she felt she had been drugged while drinking and may have been assaulted. The woman was not able to give  police a suspect description.

Columbia police say she was last seen in a fraternity house in the 800 block of S. Providence Road.

Police say the investigation is ongoing.