Justice Manual § 9-24.300

Although the provisions of this section, which allows the BOP to implement special administrative measures reasonably necessary to prevent disclosure of classified information by an inmate (typically a convicted spy or a person awaiting trial on a charge of espionage or similar offense), are similar to those in 28 C.F.R. § 501.3, classified information cases are less susceptible of uniform processing. Moreover, special measures to prevent the disclosure of classified information may only be implemented upon written certification to the Attorney General by the head of a member agency of the United States intelligence community that the unauthorized disclosure of such information would pose a threat to the national security, and that there is a danger that the inmate will disclose such information. When a member agency of the intelligence community wishes to request special administrative measures with respect to an inmate to prevent the disclosure of classified information, the agency should contact the Executive Office for National Security for instructions on how to proceed.