By Brittany M. Hughes, MRC TV - Karmelo Anthony, a 17-year-old student at Frisco Centennial High School, has been arrested and charged with murder. According to Metcalf's brother, the altercation began when he and Austin came to their team tent and found Anthony sitting in it. They asked him to move, and he became belligerent. When Austin asked Anthony to move again, Hunter said, Anthony pulled out a weapon and stabbed him... Metcalf, who played on his high school football team and was hoping to play college ball, leaves behind a grieving family and a stunned school community.