Billionaire Leon Black, former CEO of Apollo Global Management, is suing the House Oversight Committee. 

The lawsuit asks a federal court to block subpoenas that were issued as part of its investigation into disgraced financier and convicted sex offender Jeffrey Epstein, the Associated Press reported. 

House Committee on Oversight and Government Reform Chairman James Comer, R-Ky., issued two subpoenas to Black in June. The first subpoena compelled Mr. Black to appear for a deposition, and the second subpoena required him to produce nondisclosure agreements to the Committee.  

Black refused to appear for the deposition on Thursday, instead electing to file the lawsuit. Black's lawsuit argues the subpoenas exceed the committee's authority by seeking private information. 

“The Committee is on a fishing expedition that oversteps its authority and completely ignores its responsibility,” Black’s attorney, Susan Estrich, said in a statement.