When the officer advised another responding officer that he had "the alleged suspect," Anthony reportedly responded, "I'm not alleged, I did it," according to the arrest report. ????? ???????  

One officer who responded to the scene said Anthony told him unprompted, without being asked any questions about the incident, "I was protecting myself," according to the arrest report. ????????????  

The suspect in the deadly stabbing -- Karmelo Anthony, a student at Frisco Centennial High School -- has been charged with first-degree murder, police said. ?????  

Austin Metcalf, 17, an 11th grader at Frisco Memorial High School, died after police said another student stabbed him during an altercation in the bleachers at the meet. ????? ???????

The incident occurred Wednesday morning at a Frisco Independent School District stadium during a track and field championship involving multiple schools in the district. ????????????