Toronto police are looking for a man who pulled a gun on a staff member of a York University campus bar.

The incident happened at The Underground around midnight, York University told its students in a security alert posted to its website.

The patron fired at the staff member, who was trying to eject him from the premises.

The staff member was later treated for non-life threatening injuries.

The male suspect fled the scene on foot.

Police say the suspect is a 19-year-old black male who was wearing a green jacket with black jeans.

Anyone with information is asked to contact Det. Jason Kraft at 416-808-3144.