Sec. 4. As used in this chapter, "law enforcement officer" means an individual who is employed or was formerly employed as:
(1) a police officer (including a tribal police officer, a correctional police officer, and a hospital police officer employed by a hospital police department established under IC 16-18-4), sheriff, constable, marshal, prosecuting attorney, special prosecuting attorney, special deputy prosecuting attorney, the securities commissioner, or the inspector general;
(2) a deputy of any of the persons specified in subdivision (1);
(3) an investigator for a prosecuting attorney or for the inspector general;
(4) a conservation officer;
(5) an enforcement officer of the alcohol and tobacco commission; or
(6) an enforcement officer of the securities division of the office of the secretary of state.