A 61-year-old Pickering woman is in critical condition following a two-vehicle collision in Ajax on Sunday evening.

The crash occurred around 5:45 p.m. at the intersection of Kingston Road and Chapman Drive, where a blue Toyota Corolla and a black Honda Accord collided, according to Durham Regional Police.

The 60-year-old woman driving the Toyota sustained minor injuries, while her passenger was airlifted to a Toronto trauma centre with life-threatening injuries.

The driver of the Honda, an 18-year-old Pickering man, was not injured. His two passengers—an 18-year-old woman and a 19-year-old woman—were treated for minor injuries at a local hospital.

The DRPS Collision Investigation Unit closed the intersection for several hours to investigate. The cause of the crash is still under investigation.

Anyone with information or dashcam footage is asked to contact Detective Constable Riley at 905-579-1520, ext. 5216, or toll-free at 1-888-579-1520.