Rep. Devin Nunes said his team of investigators knows a memo from the British government disavowing British ex-spy Christopher Steele, the author of the anti-Trump dossier, is real.

A letter from the British Embassy to the incoming national security team after President Trump was elected to the White House is mentioned in a newly unsealed filing in federal court by former national security adviser Michael Flynn’s lawyers. The filing claims this letter was also sent to outgoing national security adviser Susan Rice and “apparently disavows former British Secret Service Agent Christopher Steele, calls his credibility into question and declares him untrustworthy.”