A stabbing incident involving two students from different schools results in the suspect claiming self-defense.

Karmelo Anthony faces first-degree murder charges in the alleged April stabbing of Texas track star Austin Metcalf, and is expected to claim self-defense

Karmelo Anthony, the 17-year-old accused of fatally stabbing another teen during an altercation at a Frisco ISD track meet in early April, was indicted for murder by a Collin County grand jury on Monday. Anthony was arrested on April 2 in connection with the stabbing 17-year-old Austin Metcalf during a track meet at Kuykendall Stadium.