Police have released an image of a man who allegedly performed an indecent act while seated near a 37-year-old woman on a GO train.

According to police, the man was riding the Aldershot to Union Station GO Train at around 1 p.m. on Tuesday when he performed the indecent act in view of the woman.

At that point, police say the woman snapped a picture of the man, prompting him to flee at the next stop.

The man is described as 40 to 50 years old with short brown receding hair and glasses. He was last seen blue jeans, a blue shirt and a red winter jacket with grey arms and distinctive silver flashes on the shoulder.

Anyone with information is asked to contact police at (416) 808-5200 or Crime Stoppers anonymously at (416) 222-TIPS (8477).