Newly released surveillance footage captures the moments a 17-year-old high school student fled after fatally stabbing a fellow athlete at a Texas track meet, then admitted to officers “I’m not alleged. I did it” when taken into custody.

Surveillance Captures Fatal Stabbing Aftermath

Collin County court released videos and photos Friday showing Karmelo Anthony running from the tent where he stabbed Austin Metcalf at David Kuykendall Stadium in Frisco, Texas, on April 2, 2025. The surveillance footage shows Anthony fleeing through the stands and onto the track immediately after the attack. Additional video captures him walking past track tents before the stabbing, and a third shows his arrest on the track shortly after. The released evidence includes crime scene photos, bodycam footage, 911 calls, and images of the blood-soaked jacket and Ozark Trail multi-tool knife prosecutors identified as the murder weapon.

Desperate 911 Call Reveals Chaos

Audio from the 911 call following the attack captures frantic efforts to save Metcalf’s life. A caller reported an Army veteran was compressing the wound as people shouted in the background. “There’s a lot of blood. He’s not breathing,” the caller told operators, adding that Metcalf had become unconscious. The recording captures someone yelling “Stay with me, Austin!” and “Fight through, Austin!” as bystanders performed chest compressions. The caller said he didn’t initially know who committed the stabbing but believed other students witnessed the attack.

Self-Defense Claim Rejected By Jury

Anthony stabbed Metcalf with a 3.5-inch blade after Metcalf and his brother confronted him while he sat in their team’s tent at Memorial High School, prosecutors said. In bodycam footage, Anthony told officers “He put his hands on me. I told him not to. He put his hands on me.” Anthony admitted to the stabbing but claimed self-defense. Prosecutor Bill Wirskye noted the weapon was “not particularly a quality knife” but proved lethal when Anthony pulled it from his backpack during the confrontation. A jury convicted Anthony of first-degree murder earlier this month, sentencing him to 35 years in prison. He will be eligible for parole after serving half his sentence. The conviction sparked criticism from Anthony’s supporters regarding the jury’s composition. Judge John Roach authorized releasing the trial evidence to provide transparency now that proceedings have concluded.