Toronto police have released security photos of a man wanted for allegedly sexually assaulting a woman at Dundas West subway station earlier this week.

Around 1 a.m. Tuesday, police say a woman, 25, got off a train at the station and was followed by a man.

The man then sexually assaulted her on the platform and fled the scene, police said in a news release Thursday.

Police are now looking for the man described as 6-ft-4 with black hair in twists and a Scorpion tattoo on his right hand.

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