York Regional Police say a 67-year-old woman and her dog are dead after being struck by a vehicle Thursday evening.
Police say the collision happened in the intersection of Stonehaven and Best Circle around 7:30 in Newmarket.
Police say both the woman and her pet were pronounced dead at the scene.
They say the driver, a 50-year-old woman also from Newmarket, remained at the scene.
Investigators are asking anyone with information or video of the incident to contact them.