Police are asking the public for assistance in solving the 45th homicide of the year.
On Monday Oct. 6 Yusuf Ali, 18, was found with multiple gunshot wounds near Shuter and Trefann streets.
Ali was taken to the hospital with life threatening injuries, where he was pronounced dead.
The suspect was wearing all black and was last seen headed north on Regent Street, police say.
Police are reviewing security video taken in the surrounding area.
Anyone with information is asked to contact police at 416-808-7400.