A 28-year-old man has been arrested after he allegedly pulled a woman into a laneway behind a building in Wilson Heights and sexually assaulted her.

Police say that a 20-year-old woman was walking in the Dufferin Street and Wilson Avenue area shortly after midnight on Friday when the man approached her.

At that point, police allege that the man proceeded to forcefully pull the woman into a nearby laneway where he sexually assaulted her.

The man then fled the scene but was arrested a short time later.

Samsuldeen Ajimotokan, 28, of Toronto, is charged with one count of sexual assault.

Police say that they are concerned that there could be additional victims out there who have not yet come forward.

Anyone with information is asked to contact police at (416) 808-7474 or Crime Stoppers anonymously at (416) 222-TIPS (8477).