One staff member at Jefferson City Correctional Center was transported to a local hospital for treatment of a head wound Tuesday after an altercation involving several inmates on the prison yard.

According to a spokesperson, the altercation on the yard involved about 25 offenders. The situation was resolved, and the facility has been placed on lockdown until Wednesday morning.

During the disturbance, one staff member fell and hit his head, requiring him to be taken to a hospital for treatment.