When a vacancy occurs in the following offices, the duties of the office, until it is filled by election as provided by law, shall be assumed by the persons herein designated:
(1) sheriff, by the chief criminal deputy;
(4) coroner, by the chief deputy.
If there is no such person to assume the duties when the vacancy occurs, the governing authority or authorities of the parish or parishes concerned shall appoint a qualified person to assume the duties of the office until filled by election.
Congratulations! You're now booked up on Article V Section 30 of the Louisiana Constitution!