Eloy Police Department investigators, managers from private prison operator Corrections Corporation of America and California Department of Corrections and Rehabilitation investigators are examining a riot that broke out at the prison Thursday afternoon.

Ten inmates were injured and seven of them transported to outside hospitals for treatment of moderate to serious injuries. One of the seven remains hospitalized Friday for treatment of injuries, which are described as not life-threatening...

...The incident, during the lunch hour in an area that only houses California inmates, involved approximately 110 inmates. No staff was hurt during the incident, which drew trained response teams from other areas of the prison as well as mutual aid from the Eloy Police Department as a precautionary measure.

According to a press release, prison staff responded immediately and quelled the disturbance, having to use pepper spray to dispel the altercation. Inmates complied with orders, and within 10 minutes they stopped fighting and lay down.

The 1,596-bed Red Rock Correctional Center is owned by Corrections Corporation of America and houses medium-security male inmates for the state of California and the state of Hawaii and detainees of the U.S. Marshals Service...

Officials with a privately run prison near Eloy are continuing to investigate a riot at the Red Rock Correctional Center, where about 50 Hawaii inmates are housed.

Initial reports were that Hawaii inmates were not involved in the riot.

A news release issued yesterday by Corrections Corporation of America said facility staff has identified 43 inmates who are believed to have been involved in the incident.

The prison was locked down and inmates were in administrative segregation pending further investigation and disciplinary action...