A nearly three-minute video, posted online May 14, shows a bloodied inmate being chased and beaten by two others swinging padlocks tied to straps.

Arizona prison officials said Sunday they are investigating ... open at affected complexes" to relieve the effects of high outdoor temperatures. "At any time, the doors may be secured ...

A nearly three-minute-long fight at an Arizona state prison was caught on camera, and we're hearing from the man who oversees all state prisons, director Ryan Thornell, about recent prison violence.

The attack moves from an interior dormitory space to an outdoor area at the Winchester Unit at Arizona State Prison Complex–Tucson. At no point do correctional staff appear on screen.