Police are searching for a suspect after a stabbing in midtown Toronto Thursday night that left a man critically injured. It happened near St. Clair Avenue West and Bathurst Street at around 10:30 p.m. Toronto police said a man, for unknown reasons, approached another man from behind and stabbed him. The victim was located at the scene suffering from stab wounds and was transported to hospital with life-threatening injuries. Police said the suspect fled and was last seen eastbound on St. Clair Avenue West. On Friday evening, investigators released a photo of the suspect, who is described as between 30 and 40 years old, five-foot-ten, and wearing blue jeans, black shoes, and a black jacket with a blue hood. Police are asking anyone with information to contact them at 416-808-1300 or Crime Stoppers anonymously at 416-222-TIPS (8477) or www.222tips.com.