10/05/2015 01:59 EDT | Updated 10/05/2016 05:12 EDT

Fourth Person Dies After Highway 401 Pileup In Ontario

Raymond Boyd via Getty Images
WINDSOR, ONTARIO, CANADA - FEBRUARY 28: Ontario Provincial Police vehicle on February 28, 2015 in Windsor, Ontario, Canada. (Photo By Raymond Boyd/Getty Images)
WHITBY, Ont. — A fourth person has died after a massive car crash on a major highway east of Toronto.

Police say a 10-year-old boy died in hospital Sunday as a result of injuries from a 20-vehicle collision on Highway 401 in Whitby, Ont., on Friday night.

They say a man, woman and another boy died and another four remain in hospital with one in critical condition. 

Police say the collision occurred when a transport truck driving westbound crashed into slower moving vehicles approaching a construction site, which caused a chain reaction.

The driver of the truck wasn't injured.

Police say no charges have been laid, but their investigation is ongoing.


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