Police are looking for a man who allegedly sexually assaulted an 18-year-old woman on a Grand River Transit bus on Monday afternoon.

The woman told police she was touched inappropriately by a man she didn't know on the 202 GRT bus near Ira Needles Boulevard and The Boardwalk shopping area.

The man is described as South Asian, between 30 and 40 years old with brown eyes and dark, curly hair. He wearing very faded blue jeans that were almost white, a dark leather belt, a white t-shirt that may have had black writing on it and a black zip-up jacket with a straight collar.

Anyone with information is asked to call Waterloo Regional Police at 519-650-8500 or Crime Stoppers.