WOODVILLE  (AP) — A prison official says one inmate has died and several were injured in a fight at a prison in Wilkinson County that resulted in the facility being put on lockdown.

Wilkinson County Correctional Facility spokesman Issa Arnita says inmate Kendrick Walker died in a fight involving six inmates Sunday afternoon in one of the prison’s housing units.

Another inmate was seriously injured. Four others have injuries that aren’t life-threatening.

Arnita says the correctional facility remains on lockdown Monday and the death is being investigated. He says authorities don’t yet know the motive behind the fight.

Mississippi Department of Corrections records indicate that the 33-year-old Walker was serving a 10-year sentence for convictions including cocaine possession, marijuana possession with intent to distribute and possession of a firearm by a convicted felon. Those charges originated in Franklin and Pike counties. Walker’s tentative release date was May 2015.

Utah-based Management & Training Corp. runs the prison, which has 950 inmates.

A spokeswoman for Department of Corrections referred comment to MTC.

An inmate died at the same prison in April 2013 in a broader disturbance, when it was run by Corrections Corporation of America.