TUCSON, Ariz. -- Fifteen of the 17 inmates injured in a southern Arizona prison fight have been released from hospitals and returned to prison.
Arizona corrections officials are investigating the cause of the fight that broke out among 400 inmates Sunday morning in a minimum-security unit of the Arizona State Prison Complex in Tucson.
Details haven't been released on the injuries suffered by the 17 inmates who were taken to the hospital after the fight.
The unit of the prison where the fight broke out remained on lockdown Monday, while seven other sections of the prison are no longer locked down and have resumed regular operations.
Two prison employees suffered minor injuries.