New information in the case of Karmelo Anthony reveals more about the 17-year-old student-athlete accused of stabbing his peer, Austin Metcalf, at a track meet in Frisco, Texas, on April 2.

Karmelo Anthony, the now 18-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 Tuesday.

Karmelo Anthony told authorities he acted in self defense after allegedly fatally stabbing Austin Metcalf at a Texas track meet in April.