ELMORE, Ala. — An inmate was fatally stabbed during an altercation with another inmate at Staton Correctional Facility in Elmore on Thursday, according to Department of Corrections officials.

The stabbing happened at approximately 9:40 a.m. when corrections officers found Grant Mickens, 35, in the prison yard with multiple stab wounds to his back, chest and arms.

Mickens was taken to the facility’s health care unit for emergency treatment where he succumbed to his injuries at 9:50 a.m.

Inmate Demetric Horsley, 31, was detained as a suspect in the inmate’s death. A makeshift knife used in the stabbing was recovered and Horsley will be charged with capital murder. He is currently serving a life sentence on a 2005 murder conviction out of Mobile County.

Mickens was serving a 22-year sentence for a 2002 first-degree robbery conviction in Shelby County.

No other inmates were involved in the incident.

Staton is a medium custody level correctional facility designed for 508 inmates with a population of 1,382, or 272 percent occupancy rate.

The facility was placed on lockdown while the ADOC investigates the stabbing.