Miss. Code Ann. § 21-21-1: Miss. Code Ann. § 21-21-1

The marshal or chief of police shall be the chief law enforcement officer of the municipality and shall have control and supervision of all police officers employed by said municipality. The marshal or chief of police shall be an ex officio constable within the boundaries of the municipality, and he shall perform such other duties as shall be required of him by proper ordinance. Before performing any of the duties of his office, the marshal or chief of police shall give bond, with sufficient surety, to be payable, conditioned and approved as provided by law, in an amount to be determined by the municipal governing authority (which shall be not less than Fifty Thousand Dollars ($50,000.00)). The premium upon said bond shall be paid from the municipal treasury. If any marshal or chief of police shall fail to perform any of the duties of his office, it shall be the duty of the district attorney or county attorney upon receiving notice thereof to immediately file quo warranto proceedings against such official.

The provisions of this section shall be applicable to all municipalities of this state, whether operating under a code charter, special charter, or the commission form of government, except in cases of conflict between the provisions of this section and the provisions of the special charter of a municipality, or the law governing the commission form of government, in which case of conflict the provisions of the special charter or the statutes relative to the commission form of government shall control.