A Nebraska Department of Correctional Services staff member was assaulted Sunday at the State Penitentiary in Lincoln.
An inmate punched a male staff member in the head, said a spokeswoman for the Corrections Department. Chemical agents and physical force were used to subdue the inmate.
The staff member was taken to a local medical facility for treatment of injuries that were not considered life-threatening, and then was released. Corrections officials would not release the names of the staff member or inmate.