Director of National Intelligence James Clapper has ordered an internal review across the intelligence community to determine if leaks regarding a Saudi mole who infiltrated an Qaeda affiliate in Yemen came from any of the 16 intelligence agencies he oversees.

The move comes after revelations this week that a mole helped foil a plot to blow up a U.S.-bound plane by penetrating al Qaeda in the Arabian Peninsula.

"We are looking internally to determine whether or not there were unauthorized disclosures of classified information," said a U.S. intelligence official, who has direct knowledge of the review but declined to be named and was only authorized to discuss it if no name was used.

The review will not include the White House or the national security staff, which technically is not part of the intelligence community.

At this point, Clapper's general counsel staff will conduct the review. It is not a formal investigation and does not involve the inspector general.

"We aren't there yet," the official said, noting that an investigation is a process with legal procedures and ramifications for disciplinary action.