Newly released footage shows Karmelo Anthony calmly admitting to fatally stabbing Austin Metcalf just moments after he was taken into custody.
Anthony, 19, stabbed 17-year-old Metcalf during a high school track meet in Texas last year.
Earlier this week, he was sentenced to 35 years in prison for the killing.
A judge has since unsealed a large collection of trial evidence, including graphic photographs and enhanced security video capturing the moments leading up to and following the stabbing.
The footage shows activity beneath the Memorial High School athletes’ tent at the meet before Anthony is seen fleeing the area.
In a separate clip, Anthony is shown being detained by a local police officer, who can be heard radioing in that he had “the alleged suspect.”
‘I’m not alleged, I did it,’ replies Anthony as he is detained by law enforcement.
The public has also been shown the knife involved in the stabbing, as well as blood soaked clothing worn by Metcalf and the deep stab wound in his chest.
The murder case shocked America, and the discussion surrounding the killing of a white teenager by a black peer quickly became racially fraught.
Newly released security camera footage shows Karmelo Anthony shockingly confessing to fatally stabbing Austin Metcalf
Anthony, 19, was sentenced last week to serve 35 years behind bars for killing Metcalf, 17, at a high school track meet in Texas last year
Anthony is seen just outside the Memorial High School tent where the stabbing took place
Footage shows Anthony running away from the scene following the stabbing
During the trial, Anthony and his legal team claimed he stabbed Metcalf in an act of self-defense after they got into a confrontation during a rain delay at the sporting event on April 2, 2025.
Metcalf called out Anthony for standing under a tent that did not belong to his school, the Frisco Police Department said.
But prosecutors eviscerated Anthony’s self-defense claim that Metcalf attacked him first with video evidence and witness testimony.
Witnesses who were in the tent described Anthony as the aggressor, testifying that Anthony told Metcalf: ‘Touch me and see what happens,’ provoking Metcalf to push Anthony, who then pulled out a knife and stabbed him in the chest.
Prosecutors said Metcalf’s twin brother, Hunter, rushed to his aid as Anthony ran from the scene and later tried to blend into groups of kids who were exiting the stadium.
Anthony sat motionless in court as police body camera footage from the track meet showed Hunter pleading for help after the stabbing.
Jurors then gasped in horror after being shown never-before-seen photos of Metcalf’s punctured heart during the trial.
Metcalf was stabbed once, with the knife piercing through his bone in the center of his chest and puncturing the right side of his heart, a medical examiner testified.
Metcalf called out Anthony for standing under a tent that did not belong to his school, the Frisco Police Department said
Evidence from the Karmelo Anthony murder trial was released to the public on Friday by the Collin County judge who presided over the case
In another clip, Anthony is seen being apprehended by a local police officer who speaks into his radio that he’s ‘got the alleged suspect’
For the first time, the public is also seeing the knife used in the deadly stabbing
Still, while cross-examining the medical examiner, Anthony’s lawyers implied that Metcalf impaled himself on the knife.
He had originally faced between five to 99 years in prison for the murder, but prosecutors agreed to allow the jury to consider ‘sudden passion’ as a factor when determining his sentence.
‘Sudden passion’ is a legal term in Texas that allows a criminal to argue they were in an intense emotional state when they committed wrongdoing.
It would have reduced Anthony’s sentence to that of a second-degree felony for which he could have served as little as two years behind bars.
However, the jury rejected the argument and spent less than three hours passing its guilty verdict, and another roughly two and a half hours before they handed down their sentence.
Anthony will now have to serve at least half of the sentence before he is eligible for parole.
The teenage killer filed a notice of appeal less than 24 hours after he learned his fate for fatally stabbing Metcalf in the heart.
‘We believe there are several important issues for the appellate courts to consider. An appeal is the next part of the legal process and a right afforded every American,’ his lawyer, Mike Howard, previously told TMZ.
