Police said a woman was jogging in the area of Dupont Street and Edwin Avenue when an unknown man came out of the bushes and allegedly exposed himself.
He then took a few steps toward the woman, but she ran away, police said.
On Saturday afternoon, police released photos of the suspect. He is believed to be in his 30s and is described as six feet tall with a thin build, heavily tanned skin and black facial hair.
The suspect was last seen wearing a short-sleeved Blue Jays jersey and black shorts.
Police are asking anyone with information to contact them at 416-808-1100 or Crime Stoppers anonymously at 416-222-TIPS (8477).