Miss. Code Ann. § 51-9-179

The district, by the act of the appointment of any reservoir police officer, shall be liable and responsible for all acts of such reservoir police officer while he is acting or purporting to act under the provisions of this article, whether such action be authorized by this article or not; further, the district shall indemnify the State of Mississippi and any sheriff for any loss, costs or expenses incurred by virtue of any act, deed or omission committed by a reservoir police officer while he is acting or purporting to act under the provisions of this article, whether the act, deed or omission is authorized by this article or not.