Police advised the public on Monday that a man had broken into four homes in the Berry Road and Park Lawn Road area between 12:55 a.m. and 3:30 a.m. on Sunday.
A security camera video, security camera image and a composite sketch of the suspect are all expected to be provided to the public at a news conference scheduled for 10 a.m.
Police said the suspect they're hoping to identify and arrest broke into the homes and in one case sexually assaulted a woman who was sleeping.
In a similar string of incidents in Etobicoke last September that police believe are connected, a suspect broke into homes and sexually assaulted residents.
Anyone with information is asked to contact investigators at 416-808-7474, or to call Crime Stoppers at 416-222-8477.