Toronto police say they are investigating two incidents of feces being thrown at students in university libraries in recent days.
Const. Allyson Douglas-Cook says police are investigating a link between similar incidents at the University of Toronto and York University.
She says one incident occurred at the Robarts Libary at U of T on Friday afternoon.
Douglas-Cook says a similar incident took place Sunday afternoon at York University's Scott Library.
She says detectives are looking to determine if the suspect is the same person in both incidents.
Douglas-Cook says the person could be charged with assault.