Ontario Provincial Police (OPP) say the crash occurred shortly before rush hour and involved at least six vehicles.

Emergency crews responded to the scene near College Street and Palmerston Avenue just before 3:30 a.m. on Monday.

Police say they were called to the area of St. Clair Avenue West and Runnymede Road, not far from Runnymede Park, around 3:45 a.m. on Monday.