Walker , 40 , allegedly fired a .45 caliber Glock at Harvey and struck him . Joseph Walker , a New Jersey detective , is charged with second - degree murder . The State Police say he fatally shot driver John Harvey Jr. , after an altercation . Walker 's wife , who were with him during the apparent road - rage incident , police say .
Joseph Walker , a New Jersey detective , is charged with second - degree murder . The State Police say he fatally shot driver John Harvey Jr. , after an altercation . Walker 's wife , who were with him during the apparent road - rage incident , police say .