Arredondo, one of two law enforcement officers who face criminal charges for their response to Texas' deadliest school shooting, asked a state district court on Friday to quash his 10 felony charges of child endangerment.

While the 18-year-old gunman opened fire while barricaded inside a classroom of Robb Elementary School in Uvalde, Texas, only one of the 188 CBP law enforcement officers who responded had a halligan tool — a device capable of forcibly opening the locked door.

The internal review by U.S. Customs and Border Protection said the 'lengthy delay' in killing the shooter was the fault of local law enforcement, not the Border