Toronto police are trying to identify a suspect in an alleged sexual assault that took place in the Wilson Heights area Tuesday evening.

According to police, a 23-year-old woman was walking in the Wilson Avenue and Allen Road area at around 8 p.m. when a man approached her from behind and grabbed her.

The woman told police that she was pinned against a concrete barrier and sexually assaulted.

She fought off the suspect, who fled westbound on Wilson Avenue.

The suspect is described as a man between 30 and 50 years of age, black, with a full black beard. He was wearing a black toque, black bomber-style jacket and dark pants.

Anyone with information is being asked to contact police at 416-808-3200 or call Crime Stoppers anonymously at 416-222-TIPS (8477).