The chief witness in the Justice Department’s inquiry into Rep. Matt Gaetz (R-FL) is cooperating with the House Ethics Committee as the panel investigates whether the Florida Republican had sexual relations with an underage girl while serving in Congress.

Joel Greenberg “has cooperated and is cooperating” in any congressional request, his lawyer Fritz Scheller told the Washington Examiner in a statement on Friday. Scheller did not disclose whether Greenberg had submitted materials supporting the sex allegations against Gaetz, but he noted “that documents provided to Congress support statements Mr. Greenberg has made in the past.”