On June 14, the 20-year-old suspect allegedly placed an ad on the online classifieds site Kijiji for a room for rent in his condominium in the Kennedy Road and McNicoll Avenue area.
On June 25, police say the 18-year-old woman came to view the unit for rent. The man offered her alcohol and marijuana, and then proposed to walk her out of the condo. But instead it is alleged he took her to an area that required a key card to access and exit, where police say he sexually assaulted her.
The man was arrested on Friday and charged with sexual assault.
Police believe there may be more victims.
Anyone with information is asked to contact police at 416-808-4200, Crime Stoppers anonymously at 416-222-TIPS (8477), online at 222tips.com, text TOR and your message to CRIMES (274637), or Leave A Tip on Facebook.