Dion Raymond Jack Percy

He then turned towards three children. He killed the two boys, Leo Wilson and Dion Percy. The boys' sister, Stacey, was critically injured by a bullet to her abdomen, but survived. Ross Percy, the children's father, who had been driving them home after a day fishing when they saw the fire, was fatally shot in the head. Source: https://en.wikipedia.org/wiki/Aramoana_massacre