The state returned control to the U.S. Bureau of Prisons in 1955 for conversion into a low-to-medium security federal prison. The prison was coed, with female prisoners housed separately, until 1977, when overcrowding led to the transfer of the women to the federal prison in Dublin, California. The prison was given increased barbed wire and armed guards in the early 1980s in an effort to dispel the facility's "Club Fed" image. A corruption scandal rocked the prison in the early 1980s, resulting in the indictment of six employees on charges of bribes, cover-ups, marijuana sales to inmates, and other corruption. Those indicted included Charles DeSordi, the prison's chief investigator of crimes, the highest-ranking federal prison official ever to be indicted.