The 17-year-old charged with the fatal stabbing of another teen during a Texas track meet allegedly warned the victim, “touch me and see what happens,” as per a police report detailing the altercation.

Authorities have charged Karmelo Anthony, a student-athlete from Frisco Centennial High School, with murder. He is accused of fatally stabbing Austin Metcalf, a 17-year-old junior from Memorial High School in Frisco, on Wednesday morning, following a dispute over seating arrangements.

According to an arrest report accessed by Fox News, new details have surfaced about the events leading up to the incident. Metcalf reportedly asked Anthony to leave the Memorial team’s tent, as shared by a witness with Frisco police. The report mentioned that Anthony then “grabbed his bag, opened it, and reached inside,” issuing the warning to Metcalf before the stabbing occurred.

“Austin stood up and pushed the male to get him out of the tent,” the arrest report said.

One officer at the scene referred to Anthony as the alleged suspect, and Anthony made a “spontanteous statement,” according to the report: “I’m not alleged, I did it.”

Anthony also asked the officers if Metcalf was “going to be OK” and asked if what happened could be considered “self-defense,” the report said.

Meghan Metcalf and her son Hunter speak out after 17-year-old Austin Metcalf was killed in a deadly altercation in Frisco, Texas. (Jeff Metcalf/Meghan Metcalf/Fox news)

Hunter Metcalf, who spoke on “The Will Cain Show” Wednesday alongside his grieving mother, Meghan, recalled the moment he saw his brother with a wound to his chest after the altercation.

“I whipped my head around, and then all of a sudden I see him running down the bleachers just grabbing his chest… I put my hand on there, tried to make [the bleeding] stop, and I grabbed his head and I looked in his eyes. I just saw his soul leave, and it took my soul, too,” Hunter said.

Metcalf attended Frisco Memorial high school and competed in the shot put and discus events. (FOX DFW)

An online fundraiser for Anthony has collected about $150,000 in donations.

“The narrative being spread is false, unjust, and harmful,” the Anthony family said in a statement on the crowdfunding platform GiveSendGo. “As a family of faith, we are deeply grateful for all of your support during this trying period. Your prayers and assistance mean more to us now more than ever.”

The fund, called the Help Karmelo Official Fund, was set up to support “Karmelo and his family during this challenging and difficult time.”

Anthony is being held in a Collin County jail on $1 million bail. Fox News Digital has reached out to his attorney and the Frisco Police Department for comment.

Fox News Digital’s Audrey Conklin and Peter D’Abrosca contributed to this report.