A 21-year-old man from Toronto is dead after a stabbing incident that happened in the parking lot of Canada's Wonderland.
The second victim of the attack, a 18-year-old man from Toronto, is in hospital in stable condition.
York Regional Police got the call just after midnight as the park's Halloween Haunt was shutting down for the night.
When officers arrived they found two males suffering from apparent stab wounds, and they believe there to be more vitims that fled the scene.
Homicide detectives are asking any other possible victims or witnesses who may have left the scene before investigators got there to contact police immediately.