Los Angeles County has agreed to pay $2.67 million to a teenager who was beaten by several other juveniles in one of the so-called gladiator fights that prosecutors said took place at Los Padrinos Juvenile Hall in Downey, Calif., in 2023.

The Los Angeles County Board of Supervisors approved the payout on Tuesday in a lawsuit filed on behalf of Jose Rivas Barillas, who was 16 when he was punched, kicked and stomped on by at least six other teens at the facility during a fight in December 2023.

Thirty probation officers at the detention center who the authorities said not only failed to prevent the attacks, but also might have enabled them, are facing criminal charges.

Surveillance video captured Mr. Barillas, now 18, being attacked while probation officers watched. Some were seen exchanging high-fives and handshakes with the attackers, according to Jamal Tooson, Mr. Barillas’s lawyer.

“He did not get medical attention after the beating, nor did they notify his parents,” Mr. Tooson said. “Instead, they let him sit there with his nose bleeding into his lunch.”

Commenting on the settlement, Kathryn Barger, chair of the Los Angeles County Board of Supervisors, said in the statement that “what happened to this young person at Los Padrinos was inexcusable.”