Prosecutor questions Austin Metcalf's track coach on first day of testimony in Karmelo Anthony murder trial

Prosecutor questions Austin Metcalf's track coach on first day of testimony in Karmelo Anthony murder trial

The trial for Karmelo Anthony, a Frisco teenager facing a first-degree murder charge after admitting to fatally stabbing a student during a confrontation at a high school track meet last year, began Thursday morning in Collin County. Anthony is accused of fatally stabbing 17-year-old Austin Metcalf.