The bureau's inmate locator shows Bulger, No. 02182-748, is now an inmate at the prison. The bureau says the Arizona prison has a total capacity of 1,700, including 1,552 in the high-security prison and 148 inmates in a low-security satellite camp.
Bulger's girlfriend, Catherine Greig, who lived with him while he was a fugitive, is in a low-security facility in Waseca, Minn.
Bulger was convicted last year in Boston of a long list of crimes, including participating in 11 murders. He is appealing a conviction and sentence almost certain to keep him behind bars for the rest of his life.
Greig and Bulger lived for more than a decade in Santa Monica, Calif., under assumed names before their arrest in 2011. The Boston Globe reported Thursday the couple have been keeping in touch via love letters written on a yellow legal pad and carried between prisons by a defense lawyer.