FRESNO, Calif. (AP) — A California prison was under lockdown Tuesday as administrators investigated a riot involving rival Latino gangs that sent 24 inmates to hospitals, one in serious condition.

Inmates at Avenal State Prison used canes, walkers and foot rests from wheelchairs to beat each other Monday night. The most seriously injured inmates suffered puncture and slash wounds, none life-threatening.

"Exactly what they were fighting over, we're still trying to figure that out," said Lt. Doug Snell, prison spokesman. "It's still a big mess."

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