Three pedestrians are in hospital after they were struck by a vehicle in Richmond Hill on Thursday afternoon. York Regional Police said it happened at the intersection of Major Mackenzie Drive and Newkirk Road at around 3:18 p.m. on Thursday. One person was taken to a trauma centre with life-threatening injuries, police said. Two others were transported to a local-area hospital, according to York Region paramedics. The severities of their injuries are unknown. Police said the driver of the vehicle remained at the scene and is co-operating. The circumstances surrounding the collision are unclear. Police said the intersection will be closed for the forseeable future.