Toronto police are looking for a teenage boy after a woman was sexually assaulted near Finch Avenue West and Martin Grove Road on Wednesday.

Officers say a 21-year-old woman was assaulted while walking near Humber College Boulevard and John Garland Boulevard around 8:15 p.m.

The suspect then ran away.

The woman did not recognize the teen, police said.

The suspect is 17 to 19 years old, five feet six inches tall, with a slim build and brown skin. He was wearing a dark grey hooded sweatshirt with black patterned graphics, black jeans, and white basketball shoes.