Bill Gates will testify behind closed doors on Capitol Hill Wednesday after the release of the Jeffrey Epstein files earlier this year raised questions about the billionaire’s ties to the late convicted sex offender – marking one of the most high-profile appearances before congressional investigators to date.

Gates will sit for a closed-door interview before the House Oversight Committee about his relationship with convicted sex offender Jeffrey Epstein.

The billionaire met with Epstein multiple times between 2011 and 2014.