el3mentary writes: "An Ohio teenagers attack on his parent left his mother dead and father wounded. Daniel Petric, 17, shot his father in the head severely wounding him, he proceeded to shoot his mother dead. The defence team argued that playing Halo 3 had made the boy insane and leaded insanity. On the night of the shooting in October 2007, Petric used his father's key to open a lockbox and remove a 9mm handgun and the game,which his parents had confiscated, the court heard. The teenager was tried as an adult and could face life without parole."