Toronto police are looking for a missing 12-year-old boy who didn't return home on Friday after going out biking with some friends.

Const. Allyson Douglas-Cook, spokesperson for the Toronto Police Service, said Tyrail Miller was last seen at about 3:30 p.m. in the area of Keele Street and Wilson Avenue.

When his mother came home later on Friday, he was not there, she said.

Police are concerned for his well-being. No police command post has been set up yet, she said.

"We are looking for him. He is still missing," Douglas-Cook said Saturday.

Miller is described as 5 foot 5 and 150 lbs. He was wearing grey track pants, a blue t-shirt with black runners, and was riding a blue BMX bike.