brian young is live tonight. ryan i know you have been digging investigating into bates' past what have you learned today? >> well we have been talking to a lot of law enforcement officials just about how even the taser and gun is set up. most law enforcement agencies across the country, the gun is on one side taser on the other side to make sure no one gets confused when they grab either one. 73-year-old robert bateses turned himself into the tulsa county jail before posting bail. the insurance ceo and volunteer deputy now faces second degree manslaughter charges for the death of eric harris in an undercover operation that went wrong fast. this voedio shows the moment harris makes a run for it after deputies say he tried to sell them a gun. >> stop right there! >> you could hear bates say he's going to use his taser. instead, he pulls a gun and fires a shot. that ultimately kills harris. >> shot him. i'm sorry. >> you can hear harris screaming