York Regional Police say a woman suffered life-threatening injuries after she was struck by a vehicle in Markham Tuesday morning.
Police said they were called to the collision on 19th Avenue, east of Woodbine Avenue, around 8:15 a.m.
Officers said a 49-year-old woman riding a bike suffered critical injuries and was transported to hospital.
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The driver of the vehicle, a 57-year-old woman from Pickering, remained at the scene, officers said.
Investigators are appealing for witnesses or anyone who may have dashcam footage of the crash to contact them at 1-866-876-5423 ext. 7704 or Crime Stoppers anonymously at 1-800-222-8477.