York Regional Police say a "targeted" shooting in the Woodbridge area of Vaughan has left one person dead and three others injured.
Police say it happened just before 9:00 a.m. Friday inside a home in the area of Weston Road and Major Mackenzie Drive.
One of the victims was pronounced dead at the scene, another person was transported to hospital with life-threatening injuries and two others suffered serious, but non-life-threatening injuries.
Police say there is no risk to the public.
No details have been released about suspects.