(a)    The city manager shall cause police department rules and regulations to be established that provide for internal affairs investigations.  These rules and regulations must be consistent with the provisions of this article and chapter 19.

    (b)    Police officers under investigation shall have the following rights in connection with internal affairs investigations:

    (1)    The police officer may provide a written or oral statement to an investigator before investigative findings are made.

    (2)    The police officer may have an attorney or Columbia Police Officer Association representative present during the officer’s interview to observe the interview.

    (3)    When practicable, a police officer interview shall be conducted during the officer’s normal working hours.

    (4)    The police officer may record the officer’s interview or obtain a copy of any recording of the interview made by the city.