Repeated Warnings Put Self-Defense on Trial

Witnesses testified that Karmelo Anthony was asked to leave a tent up to 15 times before he fatally stabbed 17-year-old Austin Metcalf at a Texas high school track meet — and the murder trial now hinges on whether that makes him a killer or a teenager who feared for his life.

Story Snapshot

Multiple student witnesses testified that Anthony was the aggressor and that the stabbing was not self-defense.
Testimony revealed Anthony was asked to leave the tent up to 15 times before the fatal stabbing occurred.
A school resource officer’s bodycam captured Anthony saying, “He put his hands on me, I told him not to,” forming the core of the self-defense claim.
Jurors viewed enhanced surveillance video, bodycam footage, and the murder weapon as the trial entered its second week.

A Fatal Confrontation at a Frisco Track Meet

On April 2, 2025, Karmelo Anthony, then a student at Centennial High School in Frisco, Texas, fatally stabbed Austin Metcalf, a 17-year-old from Memorial High School, during a track meet. Anthony, now 19, faces a murder charge. The incident unfolded under a tent where the two teens came into conflict, and the trial — drawing intense national attention — is now working through competing accounts of who provoked whom and whether deadly force was ever justified.

Jurors watched enhanced surveillance video during the first day of testimony, giving them a close look at the sequence of events leading up to the stabbing. The jury also viewed the murder weapon directly during a later session. Prosecutors have built their case around the argument that Anthony had every opportunity to walk away and chose instead to escalate a confrontation that ended a teenager’s life.

Witnesses Put Anthony as the Aggressor

On the second day of testimony, friends of Austin Metcalf took the stand and delivered emotional accounts of what they witnessed. Multiple student witnesses testified that Anthony refused repeated instructions to leave the tent — with accounts describing he was asked to leave up to 15 times. Witnesses were described as consistent in their accounts, stating they did not believe the stabbing was self-defense and identified Anthony as the aggressor rather than a victim responding to a threat.

Testimony also addressed the nature of any physical contact between Metcalf and Anthony. Accounts varied, describing the contact as ranging from a nudge to a shove or grab. That range matters legally: prosecutors argue the level of force Anthony faced did not justify a lethal response, while the defense is expected to argue that even minor physical contact can trigger a reasonable fear of harm depending on the circumstances and perceived threat in the moment.

Anthony’s Own Words Complicate the Defense

A school resource officer’s bodycam footage, played for the jury, captured Anthony shortly after the stabbing saying, “He put his hands on me, I told him not to.” That statement forms the foundation of the self-defense argument — that Anthony acted out of fear after being physically touched. However, the same footage reportedly captured Anthony asking whether what happened could be considered self-defense, a question that prosecutors may use to suggest he was uncertain about his own justification for the stabbing.

No. Surveillance video shown to the jury in the ongoing trial does not exonerate Karmelo Anthony. He admitted on bodycam: “I’m not alleged. I did it” and referenced being touched. Multiple stadium camera angles were played in court.

The viral claim he was jumped by multiple…

— Grok (@grok) June 7, 2026

Paramedics were captured on bodycam performing CPR on Austin Metcalf at the scene — footage that was played in court, causing Metcalf’s parents to break down. The case follows a pattern common in publicly witnessed self-defense homicide trials: the legal battle turns not on whether a death occurred, but on who initiated the decisive escalation, what the defendant reasonably perceived, and whether the response was proportional under Texas law. In cases involving teenagers, schools, and emotionally charged video, media coverage tends to compress those legal distinctions into a simpler narrative — and public opinion often hardens long before a verdict is reached.