PIERRE, S.D. (AP) – The prosecutor in the murder trial of a Pierre teen will update Hughes County commissioners this week. Beadle County State’s Attorney Michael Moore is representing Hughes County in the case of 17-year-old Braiden McCahren. Moore is scheduled to update the commissioners Monday. McCahren has pleaded not guilty to first-degree murder in the December 2012 shooting death of 16-year-old Dalton Williams. McCahren was 16 at the time of the shooting that happened in his home. A judge earlier this month set McCahren’s trial for September in Winner. It’s the sixth time the trial date was rescheduled.