Suspicion of fatal stab wounds during a Frisco High School concrete meet: “I did that.”

NBC 5 received new information about Wednesday’s fatal stab wound during a high school’s concrete meet in Frisco.

The attack claimed the lifespan of 17-year-old Austin Metcalf from Frisco.

The victim’s father, Jeff Metcalfe, told NBC 5 on Wednesday that his son was stabbed in the heart and died in the arms of his twin brothers.

The arrest warrant details the moment officers arrived at the scene and what it said was that the witness had led to a fatal conflict.

One corresponding officer said suspect Carmelo Anthony, 17, had admitted to stabbing 17-year-old Austin Metcalf and insisting on self-defense.

When an officer called Anthony a suspicious suspect, Anthony reportedly replied, “I didn’t do that.”

According to arrest reports, the tragic events began with the suspect sitting under another team’s pop-up tent and were told to move as the rain fell on Wednesday morning.

Police say two students from different high schools began fighting.

Witnesses tell police that Anthony thawed the bag he had and reached out to tell the victim (Metcalf).

After a while, the report states, “Austin grabbed Anthony and moved, and Anthony got out… and stabbed a black knife in the chest once.”

The murder suspect fled before being arrested by responding officers.

The report says school resource officers at nearby Staley Middle School have made their first appearance at the scene at Kuykendall Stadium.

Anthony told the officers, “I was protecting myself,” and “he put his hand on me.”

Anthony reportedly asked field officers if they could be considered self-defense what happened and whether the victim was okay.

Anthony is charged with murder and is in Colin County Jail on $1 million bonds.

If convicted, he faces 5-99 years of prison.

In a new mugshot released by the Collin County Sheriff’s Office on Thursday, Anthony looked less emotional than the mugshots taken after his arrest Wednesday.

After the incident, Frisco police said Anthony, a 100th anniversary high school student, stabbed Metcalf, a student at Memorial High School, during an argument.

Frisco Police and the school district declined to provide new information or interviews Thursday.

A district spokesman did not respond to questions raised by many parents online, including what security was on site for the morning track meet and whether athletes’ bags were being checked.

“It would be rare for Frisco ISD to have them at athletic events of this nature, as they do not use metal detectors at schools,” said school security expert and former Dallas ISD police chief Craig Miller.

Miller was not involved in the investigation, but agreed to provide insight into the school’s security.

He says it’s not uncommon for Frisco ISD to have few school resource officers at competitions like Wednesday.

“When you heard about these cases, you were impressed by the tragic circumstances,” said defense attorney and former prosecutor Russell Wilson.

Wilson, either, was not involved in this case, but agreed to provide legal insight into the accusations and potential consequences of the fatal encounter location.

“Prosecutors are probably saying this is where you don’t think this is going to happen,” Wilson said. “I think maybe they’d say they didn’t go to this incident or they didn’t come across this truck with the intention of an argument like this.”

Wilson says it may not matter if the words were exchanged.

“But Texas law does not allow a person to use lethal force in response to verbal provocation alone,” he said.

It is important to note that Wilson spoke with NBC 5 before the arrest warrant claiming the suspect was released was arrested.

Memorial High was suspended on Thursday morning in the second term to remember the 11th graders.

“These are the best places to stay,” said Kari Ordus, co-owner of Frisco’s Hello Pizzeria. “It was very unnecessary.”

Ordas has launched an online fundraiser for Meghan Needham, Mother to Austin and Hunter Metcalf. She says Needham did her second job at the restaurant and helped her son pay for his sports activities.

“Both boys are a direct result of her work ethic,” Aldous said. “Super courteous and very kind.”

Metcalf’s murderer has been placed in prison. According to prison records, approved visitors include parents, siblings and girlfriends.

Efforts to contact the suspect’s family for NBC 5 comments failed.