DOJ is also a target of President Trump's probe into leaks

The DOJ's intelligence division also "bears the responsibility of overseeing the foreign intelligence, counterintelligence and other national security activities of the United States Intelligence Community to ensure compliance with the Constitution, statutes and Executive Branch policies," according to its website.

On Wednesday Rep. Jason Chaffetz, the chairman of the House Oversight Committee, and Rep. Bob Goodlatte, chairman of the House Judiciary Committee sent a letter to DOJ Inspector General Michael E. Horowitz saying that they "request that your office begin an immediate investigation into whether classified information was mishandled here."

Chris Farrell, a former counterintelligence official and director of investigations and research at Judicial Watch, a conservative watchdog organization, said they are expecting "documents and records on FOIA requests we filed concerning investigations being conducted by the DOJ on Trump's transition team."

Farrell said if the request is not fulfilled by next Wednesday, Judicial Watch will sue.

He said, "it would be a very narrow universe of persons who would have had access to that classified material. Even the number of persons who would have access should be definable. That sort of communication intelligence, or COMINT (communications intelligence) collection activity is very specific. The list of people is narrow."

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