A security guard was shot dead early Monday morning at the Pickering casino, a suburb of Toronto, according to the Durham Regional Police Service.
Police officers went to the casino located near Church Street and Highway 401 shortly after 5 a.m.
The victim was transported to hospital where he died of his injuries.
Sergeant Joanne Bortoluss of Durham police said Michael Ferdinand, 34, was at work when he was shot.
Police do not believe not that this is a targeted attack. The circumstances that led to this confrontation were not yet clear.
Police are looking for several suspects, men and women, who appear to be involved and who fled immediately after the shooting.
The homicide squad is leading the investigation. The casino and attached hotel are closed while police investigate.