TECUMSEH =Three staff members at the Tecumseh State Correctional Institution suffered sustained serious injuries in an inmate assault. 

The assault happened Thursday, when an inmate attacked staff members with a homemade weapon. One staff member sustained a broken nose and two received staples for head injuries. All three staff members were treated at the hospital and released.

An investigation of the incident has been launched. Findings will be provided to the Johson County Attorney for determination of criminal prosecution.

The NDCS disciplinary process will be utilized with sanctions such as loss of good time.