Uvalde Consolidated Independent School District (CISD) superintendent Hal Harrell announced his retirement, saying his heart is broken over the May 24 shooting that killed 21 people.
Five Texas Department of Public Safety officers were referred to the Inspector General for an investigation into their actions during the Uvalde shooting.
Families of the 21 victims of the mass shooting at Robb Elementary had been demanding Arredondo be fired since details became clear of the law enforcement failures that day.
Chief Pete Arredondo is the first officer to lose his job over the slow and bungled law enforcement response during shooting at Robb Elementary School that left 19 students and two teachers dead.