A 17-year-old woman is dead and two other teens are fighting for their life in hospital after a horrific car crash on Highway 11 near Burk's Falls late Monday afternoon.

Police say they are still trying to determine what caused the deadly crash.

The young woman, identified by police as Sara Nicole Girard, was fatally injured when she was ejected from the vehicle as it veered off the highway and rolled at around 5:30 p.m.

The Stouffville teen was pronounced dead at the scene.

The brown 2003 Pontiac Montana van was the only vehicle involved in the crash.

The other two young women who were in the car were airlifted to the trauma centre at Sunnybrook hospital. They remain in critical condition though one of the patients is recovering faster than the other, according to police.

OPP confirmed the identities of the girls to CP24. Allison Neville, a 17-year-old Markham resident, is believed to have been the driver of the vehicle. Her injured passenger has been identified as 18-year-old Meghan Timewell.

Parts of the highway remained closed for most of the morning as Alamaguin Highlands OPP and the OPP traffic colllision investigation unit surveyed the scene for evidence.

Just graduated

The three friends just graduated from St. Brother Andre Catholic High School on Friday, according to Principal Dan Zaroski. 

The young women reportedly spent the weekend at a cottage celebrating.

The Canadian flag outside the school stood at half-mast in honour of the girl's passing.

Zaroski sent out a letter to staff today announcing the unfortunate events that unfolded over the weekend.

"It is with great sadness that I notify you of the passing of Sara Girard," the note said. "Please keep the Girard, Timewell and Neville families in your prayers."

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