Toronto police are investigating a series of random stabbings in the downtown core over the noon hour that sent three people to hospital.

The first unprovoked stabbing occurred just after 11:30 a.m. outside a caf� on Adelaide Street, near Lombard and Victoria streets. Police said the victim, a tourist, was minding his own business when a man ran up behind him and stabbed him in the back.

The suspect fled the scene. A short time later, the same man knifed a woman in the face as she was waiting for a streetcar at Queen and Sherbourne streets.

After that, the suspect ran up to a woman down the street and slashed her in the face, police said. The man again fled on foot.

The victims suffered non-life-threatening injuries in the bizarre attacks, investigators said. It doesn't appear they knew their attacker.

The first attack was captured on an office surveillance camera, giving officers a good look at the suspect.

Police are hunting for a white man in his early-to-mid 40s who was wearing a black hoodie and cut-off blue jeans. He was last seen running towards Richmond Street.

Anyone with information is asked to call 416-808-5100, Crime Stoppers anonymously at 416-222-TIPS (8477), or go online at