A warden and a prison official resigned last week , a prison official says . The arrests come amid a nationwide search for inmate and his alleged accomplice . Two other inmates from the prison have been arrested . Authorities are coordinating search efforts in Montana and along the Canadian border .
A warden and a security official resigned last week , a prison spokesman says . The resignations come amid a nationwide search for inmate and his alleged accomplice . Two other escapees from the prison have been arrested . Authorities are concentrating search efforts in Montana and along the Canadian border .