Toronto police have issued an alert after a man allegedly sexually assaulted a woman in North York.

The incident happened on Saturday at 6:50 p.m. as a woman was walking alone near Allen and Rimrock roads.

Investigators report the suspect fled the scene, heading in a northwest direction through industrial parking lots.

He is described as Asian, in his 20s and about 5’5” tall with a thin build. The suspect was last seen wearing dark clothing, a baseball cap and carrying a backpack.

Sexual assault is any form of unwanted sexual contact including, but not limited to, kissing, grabbing, oral sex and penetration. Visit the Toronto Police Service’s Sex Crimes website for more information.

Anyone with information about the incident or anyone with CCTV footage of the area, including dash-camera footage, is asked to contact police at 416-808-3204, or Crime Stoppers anonymously at 416-222-TIPS (8477) or online at www.222tips.com.