Robert Charles Harris , 73 , was allegedly trying to pull out his taser . He killed 44-year-old Eric Bates , who was 'buying ' a gun from undercovers . Police in Tulsa , Oklahoma , said Bates may have had a gun on him . The victim was being restrained by an undercover officer when Harris ran up .
Robert Charles Bates , 73 , was allegedly trying to pull out his taser . He killed 44-year-old Eric Harris , who was 'buying ' a gun from undercovers . Police in Tulsa , Oklahoma , said Harris may have had a gun on him . The victim was being restrained by an undercover officer when Bates ran up .