President Trump told former FBI Director James Comey he had serious questions about the judgement of his national security adviser, Mike Flynn, according to memos written by Comey.
Mr Comey kept records of his conversations with President Trump in the weeks before his firing in May 2017. The 35 pages of documents were released to the US Congress for review.
Our Washington Correspondent Harry Horton says the memos have likely been reviewed by Special Counsel Robert Mueller's team.
IN: "Well much of..."
OUT: "..investigation quickly."
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