As many as five people are reported to have been killed in a multi-vehicle crash in the southbound lanes of Highway 400.
It happened just before 10 last night near the Finch exit in North Toronto.
Ontario Provincial Police Sergeant Kerry Schmidt says paramedics told police that some of the victims were children.
The O-P-P say 12 vehicles, including three tractor trailers, were involved – many were crushed and burned beyond recognition.
Schmidt says it could be some time before the coroner can confirm the number of fatalities.