 Since 1979 it has included the ADC state headquarters; the administrative Annex East is on Harding Avenue south of city hall.The Ester Unit (formerly the Diagnostic Unit), the Pine Bluff Unit, and the Randall L. Williams Correctional Facility are in the "Pine Bluff Complex,"  as are the headquarters of the Arkansas Correctional School system.The ADC Southeast Arkansas Community Corrections Center is in Pine Bluff.