a 10-year-old boy who beat a younger child to death in canada went to his friends claiming that he had witnessed a ` big guy ' strike the victim with a rock .
lee allan bonneau , 6 , died from blunt force trauma to the head in august 2013 following a savage attack on a reservation in saskatchewan .
a coroner 's jury in regina heard how the underage suspect ran to his friends after the attack on bonneau telling them he had witnessed a murder .