Testimony sheds light on why Karmelo Anthony attended the Frisco track meet and what happened moments before the fatal stabbing

Lawyers for a young man who fatally stabbed a competitor at a Texas high school track meet called more witnesses Monday to try to support a claim of self-defense as a trial entered a second week.

Dr. Elizabeth Ventura, the medical examiner who performed the autopsy, testified that Metcalf suffered a severe chest wound during the confrontation.

The Ohio High School Athletic Association track and field state championship meet began Thursday.