A 32-year-old Rivière Beaudette woman was killed in a six-vehicle collision on Highway 401 in South Glengarry Monday.
Kimberly Oosting was pronounced dead at the scene of the accident which occurred in the westbound 401 near the Ontario-Québec border at about 2:30 p.m.
She was driving one of four passenger vehicles that were involved with two tractor trailers in the accident.
The Stormont-Dundas-Glengarry Ontario Provincial Police detachment says the investigation has indicated that a westbound tractor trailer collided with a westbound passenger vehicle, which then collided with several other vehicles.
Five other people were taken to hospital with non-life-threatening injuries.
A section of Highway 401 was closed to traffic, but has since been re-opened.