Leon Black, a billionaire and former associate of Jeffrey Epstein, sues the U.S. House Oversight Committee seeking to block subpoenas related to the committee’s investigation. The lawsuit challenges subpoenas issued after Black appears to have tried to avoid further testimony, despite having agreed to a voluntary interview that began the dispute.

Multiple outlets report that Black had been summoned for questioning in June, when he left the committee’s proceedings after what was described as an abrupt departure. According to several accounts, lawmakers then served him with two subpoenas during or following the closed-door voluntary interview. The stated issue is that he did not answer certain questions, particularly those connected to nondisclosure agreements.

Bloomberg, CBS News, Forbes, The Independent, and Stuff.co.nz describe the basic timeline—voluntary appearance, departure, subsequent subpoenas, and the decision to file suit—while differing mainly in emphasis. Some focus on the abrupt exit and the committee’s efforts to compel testimony; others highlight the nondisclosure agreement line of questioning and the fact that the subpoenas follow a refusal to respond.