US President Joe Biden said on Thursday that a thorough investigation into the leaked documents was underway, in cooperation between the intelligence community and the Justice Department. CNN quoted informed sources as saying that a number of US officials had stopped being briefed on the daily intelligence briefs.

The measure comes as part of the Pentagon's effort to reduce the distribution lists of briefings, after the documents were leaked. New York Times on informed sources: Pentagon document leaker is a member of Massachusetts Air National Guard Intelligence. US officials are not worried about the leaks, but he is worried about their occurrence, Biden said.