Ontario’s police watchdog is investigating a collision in Brampton that sent four people to hospital.

The collision, involving two cars and a truck, happened at the intersection of Main Street North and Williams Parkway in Brampton around 1 a.m.

The Special Investigations Unit, an arms-length civilian agency, is called when there is a serious injury or death involving a police officer.

The four people who were taken to hospital all had minor injuries, according to Peel Regional Paramedic Services.

The intersection is expected to be closed till about 9 a.m.

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