Texas highschool footballer Austin Metcalf stabbed to death in argument over seat, twin brother watches in horror

17-year-old Austin Metcalf, a Texas high school athlete, was fatally stabbed in the heart by Karmelo Anthony at a track meet over a seating dispute. Austin died in his twin brother’s arms despite his efforts to save him. Anthony, who had brought a knife, is charged with first-degree murder and held at Collin County jail.