LINCOLN, Neb. (AP) — Officials say another staff member has been assaulted at the Nebraska State Penitentiary in Lincoln.

The Nebraska Correctional Services Department says an inmate being moved from one location to another in the prison Tuesday stuck the staff member in the face. The staffer was treated for injuries and released.

The department says it won’t release the names of those involved. The attack will be investigated and findings will be submitted to the Lancaster County attorney for possible prosecution.

Officials have reported several attacks on corrections officers and staff at various Nebraska prisons over several months, including one in August at the Lincoln Correctional Center that officials say was carried about by a dozen inmates and left nine officers injured.