A 16 year-old boy has pleaded guilty to pulling the trigger on a Clay High School student during a robbery attempt. It was back in April when prosecutors say 16 year-old Jermaine Munn Jr. and his accomplice, 18 year-old Shane Williams, arranged to meet up with 18 year-old Nathan Hall for a marijuana deal, but plotted to rob him. Prosecutors say Munn Jr. shot and killed Hall when he realized that Hall knew Williams identity. His sentencing is set for December.