Fire broke out Monday night in a cell at the Lincoln Correctional Center.
Lincoln firefighters were called to the prison at 3216 West Van Dorn, just north of Pioneers Park, at 10 p.m. At 11 p.m. firefighters were still on the scene, but the fire was out, said Battalion Chief Jim Bopp of the Lincoln Fire Department. He said he could not elaborate on the fire.
As a precaution, two inmates and one staff member were treated for possible smoke inhalation, the center said in a press release. All inmates in that unit of the prison were evacuated.
The fire comes on the heels of a series of disturbances at the Lincoln Correctional Center, a medium-maximum security facility designed to hold 308 inmates. The facility held an average of 502 inmates during the second quarter of 2016, which is about 70 percent over capacity.
Nine staff members were sent to the hospital in the most recent disturbance, on Aug. 24, when a confrontation flared with inmates who refused to return to their housing units. A special detail in riot gear was eventually deployed to help end the disturbance.
The Aug. 24 disturbance marked the third time in a 12-day period that corrections staff required medical treatment following assaults at the prison.
The prison also was the site of an escape in June.
Concerns about high staff turnover and vacancies at Nebraska prisons have risen in recent weeks. A special legislative panel is probing problems in the prison system.