DOUGLAS, Ariz. — The Latest on a Sunday evening prison disturbance (all times local):

11:45 a.m.

Officials say that a majority of 17 inmates injured in a weekend disturbance have been returned to the southern Arizona prison near the U.S.-Mexico border, where their unit remains on lockdown.

Arizona Corrections Department spokesman Andrew Wilder says 12 of the inmates hurt in the Sunday night melee are back at the medium-security Mohave Unit at the state’s prison complex in Douglas.

He said Monday that six corrections officers suffered minor injuries quelling the one-hour disturbance and were treated at the prison.

Wilder says residents of the 950-bed unit will initially have their movements restricted and visits will be suspended while investigators try to determine what caused the fighting between two groups. The officials will attempt to identify the instigators and reassign them to other units if deemed necessary.


7:50 a.m.

Authorities say part of a southern Arizona prison is on lockdown following an hour-long disturbance during which 15 inmates and six corrections officers were injured.

Corrections Department spokesman Andrew Wilder says inmate movement is restricted and visitation canceled Monday at the Douglas prison complex’s 950-inmate medium-security Mohave Unit while authorities investigate.

Wilder says circumstances of what started the disturbance and what happened during it remain under investigation.

But the spokesman says preliminary information indicates the disturbance started Sunday evening when groups of Hispanic and white groups began fighting in the unit’s yard and that some inmates got on a building roof before the disturbance was quelled.

Wilder says one inmate was airlifted to a hospital for treatment of serious head injuries and that 14 other injured inmates were taken to hospitals for evaluation and treatment.

He says the six officers’ injuries were minor and treated at the prison.


This story has been corrected to reflect that the department said six officers, not four, suffered minor injuries.


11:35 p.m.

Authorities say five inmates were seriously injured when fights broke out at a state prison on Arizona’s southern border, KGUN-TV reports.

Andrew Wilder from the Arizona Department of Corrections says five inmates were seriously injured and have been taken to the hospital, the TV station reports. Four corrections officers were treated on the scene after they were assaulted during the incident while trying to control inmates, according to KGUN.

Arizona Department of Corrections officials say the riot started shortly before 8 p.m. Sunday with fights between groups of prisoners in the medium-custody Mohave unit, which has 940 beds. The station says inmates there are not locked in cells and have free access to the yard during the day.

Corrections officials say the unit was locked down and tactical support units were called in to end the disturbance, which lasted about an hour.


11:03 p.m.

The Cochise County Sheriff’s Office says a riot has broken out at the state prison in Douglas, on the state’s southern border.

The office says it was alerted to the riot at the Arizona Department of Corrections prison at 7:55 p.m.

The office says the Douglas Police Department is reporting that inmates were on the roof of a building throwing rocks at vehicles approaching the prison.

The sheriff’s office established a perimeter around the prison. In addition to Douglas police, the Arizona Department of Public Safety and the U.S. Border Patrol are on the scene.