Updated

Some corrections officers aren't showing up for work at a crowded south Alabama prison that has been beset by multiple incidents of violence.

Department of Corrections spokesman Bob Horton says six corrections officers assigned to William C. Holman Correctional Facility in Atmore called in sick for the third shift Sunday. Nine officers didn't show up for the same shift on Sept. 24. Three officers resigned.

Horton says officers haven't announced an official strike or given demands. Horton said officers' concerns about the facility are "understandable due to understaffing and overcrowding."

An officer at Holman died last month after being stabbed by an inmate. Inmates in a March uprising set fires, stabbed the warden and seized control of dormitory. A similar disturbance occurred in August.