Miss. Code § 21-27-35
The governing authorities of any municipality which have sold or which may hereafter sell any utility system owned by such municipality, may use the proceeds of the sale of such system, or any part thereof, for the purpose of retiring and paying off any of the public debt of the municipality, and they may purchase the outstanding bonds or other obligations of the said municipality at such price, whether above or below par, as they may consider fair and reasonable. The said governing authorities may, in their discretion, invest the said funds, or any part thereof, derived from the sale of the said system or systems in any of the securities now eligible for purchase by public sinking funds of municipalities, at such price, whether above or below par, as they may determine to be fair and reasonable.
Miss. Code § 21-27-35