S.D. Codified Laws § 23A-31-3 (2026)
Upon the motion of the prosecuting attorney, the court may reduce a sentence if the defendant has provided substantial assistance in investigating or prosecuting another person. Whenever granting a sentence reduction pursuant to this section, the court is not prohibited from reducing the sentence to a level below the minimum sentence provided in statute.
Source: SL 2009, ch 125 , § 1.