S.D. Codified Laws § 49-1-16
Current with legislation signed by the governor on or before 3/6/2024
It shall be the duty of the state's attorney of any county in which suit is instituted, or prosecuted pursuant to § 49-1-14, to aid in the prosecution of the same to a final issue upon the request of the Public Utilities Commission or the attorney general.
SDCL 49-1-16