OPP officer's body cam captured him being shot near Hagersville, Ont., Crown tells murder trial

The trial for Randall McKenzie and Brandi Stewart-Sperry, accused of the first-degree murder of Const. Grzegorz Pierzchala of Ontario Provincial Police, has begun in Cayuga, with the Crown presenting a timeline and witness interviews, and saying body-cam footage worn by the officer will be important in the proceedings.