The murder trial for a Texas teenager accused of stabbing 17-year-old Austin Metcalf during a high school track meet in April 2025 is set to begin on Thursday. Karmelo Anthony, who is now 19, faces up to a life in prison if convicted in the killing. The incident took place in the affluent Dallas suburb of Frisco. Witnesses say that Anthony and Metcalf had an altercation after the victim told Anthony he was sitting in the wrong area.