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Arizona Department of Corrections: Inmate killed during riot at Yuma prison complex

Posted at 10:12 PM, Mar 01, 2018
and last updated 2018-03-02 22:04:05-05

The Arizona state prison near Yuma remains under lockdown after authorities were able to contain a riot involving hundreds of inmates Thursday night.

Inmates reportedly attacked prison personnel around 6:45 p.m at the medium-custody Cheyenne Unit of the complex.

Officials say around 600 inmates were involved in the disturbance, which included throwing rocks, setting fire to mattresses and other property in the yard and breaking into the prison health unit. 

ADC response and tactical teams from Yuma, Lewis, and Tucson complexes brought the incident under control around 9 pm., according to a statement from corrections officials.

Twenty-six inmates were taken to the hospital vor various minor injuries. One inmate, 32-year-old Adam Coppa was killed during the incident. Exactly what caused his death is unknown at this time.

Eleven inmates remain hospitalized as of Friday afternoon. 

Eleven employees were treated at the hospital for minor injuries but have all been released.  

Other inmates involved are still contained in a fenced recreation yard as ADC investigates. 

Cleanup and evaluation is underway for damages caused during the riot. ADC says windows, sinks, toilets and fire alarms were all damaged during the incident, along with broken water lines. 

Additional criminal charges are pending for any inmates involved in violent activity.