ROCK HILL, S.C. – Winthrop University Police are investigating an alleged sexual assault that took place on campus.

Police say that a female student was walking in the area behind Bancroft by Margaret Nance and Owens Hall around 9:30 p.m. on October 29 when she was looking for something she lost in the grass when she stumbled. At the time, police say an unknown subject approached the victim, pinning her on the ground and sexually assaulting her before running from the scene.

Police have not identified a suspect in the case. Winthrop Police have scheduled a press conference for 11 a.m. Friday.