A York University student has been arrested and accused of sexually assaulting a woman in the university's library.

Police say they investigated two separate incidents in the past week -- one last Tuesday, and one on Saturday night. The victim of the first incident was not injured in the assault.

In both cases, the victims were followed into secluded aisles before being attacked. Aaron Zukewich, 21, is charged with one count of sexual assault.

Police believe there may be more victims.

Anyone with information should call police at 416-808-3104.