From The Baltimore Sun: Timothy Oxendine, 15, has pleaded guilty to fatally stabbing a classmate last year at their West Baltimore middle school. The murder of Markel Williams on William H. Lemmel Middle School grounds shook city leaders, who flocked to the school and arranged community meetings with parents. According to court documents, the teenagers were once friends, but their relationship had turned sour. The defense had argued Williams had been bullying Oxendine.