MCKINNEY, Texas — A 17-year-old witness testified Friday that accused killer Karmelo Anthony was repeatedly asked — as many as 15 times — to leave the Frisco Memorial High School team tent before he allegedly stabbed 17-year-old Austin Metcalf in the chest during a track meet last year.

The teen, whose name was withheld due to his age, told jurors that he and several Memorial athletes noticed Anthony, wearing Frisco Centennial gear, sitting under their tent at Kuykendall Stadium on April 2, 2025. Multiple students, including Metcalf, told Anthony he needed to leave.

“He refused,” the witness said, adding that Anthony responded defiantly with statements like “Touch me and find out” while keeping his hand inside his open backpack.

According to testimony, Metcalf gave Anthony a “minor pushing” during the roughly two-minute confrontation. Anthony then pulled a knife from his backpack and stabbed Metcalf once in the chest before fleeing the scene, ditching the weapon as he ran down the stands and onto the track.

The witness described Metcalf standing up, lifting his shirt, and looking scared as he saw the blood from the wound. He later called 911, frantically telling the operator his friend had been stabbed and was bleeding everywhere.

Another teammate, Jalen Matthews, 18, corroborated much of the account, testifying that Anthony seemed to have his mind set on confrontation and that the stabbing did not appear to be in self-defense. Matthews said Metcalf’s twin brother Hunter was on his phone during the initial exchange.

Anthony, now 19, has pleaded not guilty and claims self-defense, arguing that the larger Metcalf initiated physical contact. His attorneys maintain he feared for his safety amid the confrontation.

The emotional trial continued with jurors also viewing bodycam footage of Hunter Metcalf sobbing and screaming in the moments after the stabbing. Anthony faces up to life in prison if convicted of murder.

The case remains ongoing in Collin County.