Police are asking for witnesses following a serious collision in Georgina. Emergency crews got the call to McCowan Rd. near Baseline Rd. around 12:00 this afternoon, with reports of a two vehicle crash. When police arrived, they found a dump truck had collided with a car, while the two occupants of the car were without vital signs, later succumbing to injuries on scene. They closed off the area for investigation, and are asking any witnesses to the collision to contact York Regional Police at 1-866-876-5423.