Charlie Neitzel , 21 , begged Tyler Peterson to stop shooting , AG said . AG : The officer , Greg Carter , 21 , said he saw Peterson exit the building with a rifle , and momentarily lost sight of him . After Peterson fired second time , Peterson dropped to floor and did n't move . Peterson was shot three times in the head ; once in AG , bicep said . Tyler Peterson opened fire on a party of young people 21 , killing six .
Charlie Neitzel , 21 , begged Tyler Peterson to stop shooting , AG said . AG : After Peterson fired second time , Peterson dropped to floor and did n't move . Peterson was shot three times in the head ; once in AG , bicep said . Tyler Peterson opened fire on a party of young people 21 , killing six .