When Donald Trump Donald John TrumpBubba Wallace to be driver of Michael Jordan, Denny Hamlin NASCAR team Graham: GOP will confirm Trump's Supreme Court nominee before the election Southwest Airlines, unions call for six-month extension of government aid MORE received his classified intelligence briefing last month, one of his foreign policy advisers repeatedly interrupted the session, NBC News reported Thursday.

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Former Defense Intelligence Agency director and retired general Mike Flynn reportedly peppered the briefers with questions during the Aug. 17 meeting, according to three sources.

New Jersey Gov. Chris Christie, another Trump adviser, touched Flynn’s arm to get him to stop interrupting the briefing.

Trump, the GOP presidential nominee, said during an NBC candidate forum Wednesday night that he could tell, based on their body language, that the briefing officials did not like President Obama’s handling of foreign policy.

Michael Morell, a former acting director of the CIA who supports Hillary Clinton Hillary Diane Rodham ClintonJoe Biden looks to expand election battleground into Trump country Biden leads Trump by 12 points among Catholic voters: poll The Hill's Campaign Report: Biden goes on offense MORE's presidential bid, blasted Trump for discussing the classified briefing in public.

"This is first time that I can remember a candidate for president doing a readout from an intelligence briefing, and it's the first time a candidate has politicized their intelligence briefing. Both of those are highly inappropriate and crossed a long-standing red line respected by both parties," Morell told NBC.