A former British banking executive who raised questions about Commerce Secretary Howard Lutnick’s business dealings with Jeffrey Epstein has died by suicide, according to The Banker.

Simon Andriesz, 57, a former managing director at BGC Group, died last week, the publication reported. His death was confirmed by Andy Agathangelou, founder of the Transparency Task Force, which had hosted whistleblower events involving Andriesz.

Andriesz had drawn attention to business communications involving Lutnick and Epstein that he said had not been disclosed. He previously worked for BGC Group, a brokerage firm spun off from Cantor Fitzgerald, where Lutnick served as CEO.

According to the BBC, Andriesz identified a 2018 email chain in which Lutnick and Epstein discussed plans involving a startup business. Andriesz shared his findings with the House Oversight Committee ahead of Lutnick’s appearance before the panel.

Andriesz also said he discovered his own name in documents connected to Epstein. The records reportedly involved interviews he gave the FBI during a dispute with BGC Group.

In August, Andriesz described the consequences of coming forward as devastating for his family and himself, citing what he characterized as retaliation connected to his whistleblowing.

He also raised questions about Lutnick-affiliated companies considering business involving then-Prince Andrew in 2013. Andrew’s longstanding relationship with Epstein has faced extensive scrutiny.

Lutnick has denied wrongdoing related to Epstein and has condemned the convicted sex offender’s conduct. He acknowledged in congressional testimony that he visited Epstein’s private island in 2012 during a family vacation, saying he had lunch there for about an hour.

“I unequivocally condemn the conduct attributed to Jeffrey Epstein and everyone who participated in his illegal activities,” Lutnick said, according to The Banker. He has also told Congress that he did “absolutely nothing wrong” or inappropriate.

The Commerce Department has said there is no evidence of wrongdoing by Lutnick.

Epstein, a convicted sex offender, died by suicide in a Manhattan federal jail in 2019 while awaiting trial on federal sex-trafficking charges. His longtime associate Ghislaine Maxwell was later convicted on federal charges involving the recruitment and sexual abuse of underage girls.

Andriesz’s death comes as Congress and federal authorities continue examining records concerning Epstein and his connections to prominent figures in politics, business, and international circles. The Banker reported that Andriesz had spent more than 35 years working in financial markets.