The House Oversight Committee on Tuesday released transcripts of closed-door testimonies by Bill Gates and Lesley Groff, taken in June as part of its investigation into the late sex offender Jeffrey Epstein. Gates said after his interview that he made a "grave error in judgment" by meeting with Epstein but denied any wrongdoing. Committee chairman Republican Rep. James Comer formally requested that Gates testify after he appeared multiple times in a trove of documents released by the Justice Department. Gates has not been accused in connection with Epstein's crimes and has repeatedly denied any knowledge of Epstein's abuse of girls. Groff was a longtime assistant who arranged massages with young women for Epstein. According to lawmakers, she began working for Epstein around the time he pleaded guilty to state sex offense charges in Florida, including soliciting prostitution from an underage girl. Rep. Stephen Lynch questioned whether Groff could "rightfully and truthfully maintain that she saw nothing improper." The federal release of case files also showed Groff replying to email messages, including a 2018 email asking about a missing key card for the office of Harvard math professor Martin Nowak, to whom Epstein gave millions of dollars.