A Collin County judge has released more than six gigabytes of trial evidence to the public in the case against Karmelo Sincere Anthony, offering the first public look at the weapon used to kill 17-year-old Austin Metcalf on April 2, 2025.
District Judge John Roach Jr. authorized the release on Saturday. Among the materials was the first photographic evidence of the murder weapon, a detail that had drawn intense public curiosity since the case began.
The knife was an Ozark Trail 6-in-1 Multitool with Light, Model 5335, a folding utility tool available at Walmart for roughly $13. It featured a 3.5-inch serrated blade, a flashlight, and additional tools including a glass breaker. The handle was gray and textured. The blade was dark, nearly black.
As originally reported, prosecutors described it during trial as “not particularly a quality knife,” yet it proved fatal during a confrontation at David Kuykendall Stadium in Frisco, Texas.
Court-released photographs showed the knife resting on what appeared to be bleacher seating, with one image displaying the blade partially extended. Additional evidence included a blood-stained jacket linked to the victim and an uncensored autopsy photo showing Metcalf’s approximately two-inch chest wound. Surveillance footage and body-camera video showing Anthony after the stabbing were also made public.
A Frisco Police Department school resource officer recovered the knife, blood-stained, from the bleacher area. Anthony had discarded it while fleeing the scene.
The incident unfolded during a district-wide track meet, disrupted that day by rain. Anthony, a Centennial High School student, had positioned himself under the Memorial High School team tent when members of that team, including Metcalf, confronted him and repeatedly asked him to leave.
Witnesses testified that Anthony refused to move and made multiple provocative statements, including “touch me and see what happens” and “punch me and see what happens,” while reaching into his backpack. One witness recalled Metcalf responding, “Dude, I’m not gonna fight you at a track meet.” By multiple accounts, Metcalf showed no desire to escalate the situation physically.
After being told to leave upwards of 15 times, Metcalf eventually gave Anthony a light shove. Anthony then reached into his backpack, produced the knife, and stabbed Metcalf in the chest. The wound proved fatal.
Trial testimony confirmed the knife could be opened with a single quick flick. A police officer noted that carrying a blade of that length is legal under Texas law, though it violated school policy. Anthony had been carrying the knife in his backpack when he arrived at the track meet. No evidence presented at trial established a specific reason he brought it.
Karmelo Anthony was convicted of murder and sentenced to 35 years in prison.