Author Michael Wolff dismissed a lawsuit threat from first lady Melania Trump and announced Thursday he will be publishing his insights from interviews with the late convicted sex trafficker Jeffrey Epstein.

Wolff announced on Instagram on Wednesday that he was “notified by lawyers for the first lady that they intend to sue me for a billion dollars” over his comments on audio tapes he recorded of Epstein allegedly describing his relationship with the president and first lady. The author accused the Trumps of engaging in a Strategic Lawsuit Against Public Participation suit, otherwise known as a SLAPP suit.