Jeff Metcalf with his son Austin, who was MVP on the Frisco Memorial High School football team. Another Frisco high school student, Karmelo Anthony, confessed to killing Austin, according to a Frisco police arrest report. Family photo courtesy of GoFundMe

The 17-year-old suspect accused of fatally stabbing a fellow Frisco high school student during a track meet confessed to the killing and told police that he was trying to protect himself, according to an arrest affidavit.

Police wrote in the arrest report obtained by Star-Telegram media partner WFAA-TV that Karmelo Anthony volunteered statements to officers before he was questioned including saying, “I did it,” and “I was protecting myself.”

Family members identified the victim as 17-year-old Austin Metcalf, a junior at Frisco Memorial High School. Austin was stabbed in the heart and died in the arms of his twin brother, the twins’ father said.

A witness told police that Metcalf had tried to get Anthony to move out from under the Memorial High School team’s tent when the Wednesday morning track meet was delayed because of the weather. Students were supposed to sit with their teams, and Anthony was a student at Centennial High School, the affidavit states.

The witness reported that when he was asked to move, Anthony opened his bag and reached inside and said, “Touch me and see what happens,” according to the affidavit.

A witness told police that Metcalf then touched Anthony, who told Metcalf to punch him and see what would happen. Metcalf then grabbed Anthony to try to get him to move, the witness said.

Anthony pulled out a black knife, stabbed Metcalf once in the chest and ran away, a witness told police, according to the affidavit.

The witness said that Metcalf grabbed his chest and asked people to get help, the affidavit states.

Police reported that they interviewed another witness who told the same story of the fight between Metcalf and Anthony.

Austin’s father, Jeff Metcalf, said that he was told that his son had grabbed Anthony’s backpack to move it and that’s when the suspect pulled out the knife and stabbed him.

Upon his arrest, Anthony told officers that he was protecting himself after Metcalf had “put his hands on me,” before the officers even questioned him about the stabbing, according to the affidavit.

When another officer arrived, the arresting officer said he had the “alleged suspect” in custody, to which Anthony replied, “I’m not alleged, I did it,” according to the affidavit.

Anthony had fresh blood on his left middle finger, police reported.

While in the back seat of the police car, Anthony asked officers if Metcalf was going to be OK, the affidavit states. Anthony threw the knife away after stabbing Metcalf and the weapon was later found in the bleachers at the track, police wrote in the report.

Anthony is being held in the Collin County Jail on a murder charge. His bond has been set at $1 million. It’s not clear whether he has retained a defense attorney.

This story was originally published April 3, 2025 at 8:14 PM.