of his own roommate. >> an emotional police kernel describes the words captured on the squad cars dash cam. >> you can hear him breathing in there and tell him you're lucky. you're lucky. >> the authorities believe that 54-year-old killed his roommate countering the louisiana state trooper. >> we asked a question that he was involved in this, and yes we're going presume that. >> according to the investigators the pick up was stuck in a ditch on sunday. trooper realized that the vehicle matched the desipgs of a reported reckless driver, and started to ask him about it. the suspect pulled out a shotgun and hitting him in the head according to authorities. >> i watch that gunshot blast and i saw my trooper go backwards and go to his unit.