MCKINNEY, Texas — A student witness testified Saturday in the murder trial of Karmelo Anthony about the moment he realized the extent of injuries sustained by 17-year-old Austin Metcalf during a stabbing incident.

The male student witness told the court that he was not initially aware of how severely Metcalf had been injured. According to his testimony, the full extent of the victim's condition became apparent only when Metcalf lifted his shirt, revealing what the witness described as "a big hole."

Anthony faces first-degree murder charges in connection with Metcalf's death. The incident occurred at a Texas track meet, according to court proceedings.

Witness testimony indicated that Metcalf called for help following the attack. The trial is ongoing as prosecutors present their case against Anthony in the death of the teenager.

The stabbing incident and subsequent legal proceedings have drawn attention as the case moves through the Texas court system. Additional witness testimony and evidence are expected to be presented as the trial continues.