Arredondo heads the school district police.
19 children and two teachers were killed when a teenager opened fire at a primary school in Uvalde on May 24, in what is the worst school massacre in the United States in ten years.
Local police have since been the subject of criticism, and it has emerged that more than a dozen police officers waited a long time outside the classrooms before confronting the 18-year-old perpetrator.
On Tuesday, Texas Security Chief Steve McCraw told senators investigating the handling of the incident that police had enough people and equipment to stop the 18-year-old minutes after he entered the school.
“Three minutes after he entered the building, there were a sufficient number of armed officers, wearing bulletproof vests, to isolate, distract and neutralize him,” said McCraw, who is the state police chief and director of the Texas Department of Public Safety.
According to him, it was Arredondo, the policeman with the highest degree on the spot, who prevented the police officers from entering the classrooms, because he “decided to put the officers’ lives before the children’s lives”.