Police have released surveillance camera images of a man who allegedly followed two teen girls into Dufferin Station and proceeded to sexually assault them on the subway platform.

Police say the man was hanging around the Dufferin Mall on Sept. 1 when he spotted two 16-year-old girls and followed them to the subway station.

The man then allegedly sexually assaulted both girls as they waited on the westbound subway platform.

He is described as heavy-set, between 20 and 30 years old with short black hair. He was last seen wearing baggy grey track pants, a dark-coloured zip-up cotton jacket with a lighter-coloured shirt underneath and running shoes. He was also carrying a towel in his hand and had a backpack.

Anyone with information is asked to contact police at (416) 808-1100 or Crime Stoppers anonymously at (416) 222-TIPS (8477).