OKLAHOMA (NewsNation Now) — The Oklahoma Department of Corrections locked down all facilities Friday after more than 20 inmates were assaulted at three male prisons.
Several of the inmates were transported to hospitals for treatment.
The ODOC tweeted the assaults took place at North Fork Correctional Center, Jess Dunn Correctional Center and Oklahoma State Penitentiary.
“Staff quickly responded by securing all inmates inside their cells,” the ODOC said, noting that all facilities system wide are secure.
Corrections staff and agents with the Office of the Inspector General are investigating what spurred the altercations.