Upon the death or resignation of a district attorney, the chief assistant district attorney or, if there is no chief assistant district attorney, the assistant district attorney senior in time of service shall perform the duties of the deceased or resigned district attorney in his or her name until such official's successor is appointed or elected and qualified. An assistant district attorney performing the duties of a deceased or resigned district attorney shall be compensated as provided for acting district attorneys in subsection (b) of Code Section 15-18-15.
OCGA § 15-18-16