TYNDALL, S.D. (AP) — A South Dakota man has pleaded guilty to a felony drug charge after his mother unknowingly served his marijuana-laced brownies to a group of seniors at the Tabor Community Center. Forty-six-year-old Michael Koranda appeared at the Bon Homme County Courthouse Tuesday where he waived his preliminary hearing and entered the plea. As part of a plea deal, both the prosecution and defense jointly recommended Koranda receive a suspended imposition of sentence, which would allow the judge to place him on probation for a period of time. Koranda would pay any medical bills not covered by insurance.