Paolo Zampolli, a special envoy for President Donald Trump, was part of a United Nations passport-selling scheme that led to the death of a former U.N. General Assembly president, according to Amanda Ungaro, an ex-Brazilian model and former U.N. diplomat who had a 20-year-relationship with Zampolli. In an interview she gave to a Brazilian journalist livestreamed on YouTube Sunday,

Ungaro, 41, did not implicate Zampolli in the official’s death, but she claimed she presented documents and other evidence about the scheme to members of Congress, whom she did not identify. She said in the interview that the former U.N. General Assembly president, John W. Ashe, was murdered by Chinese nationals who were also involved in the scheme.

The Herald has not been able to corroborate Ungaro’s allegations. But the Herald did confirm she has been in contact with the House Oversight Committee, which is investigating Jeffrey Epstein’s crimes.

Ungaro set off a firestorm in April when she claimed on social media that she had damaging information about Zampolli, President Trump, first lady Melania Trump and Jeffrey Epstein. At the time, Melania held a rare press conference to denounce rumors that she had any association with Epstein, the late New York multimillionaire whose sex crimes have become a scandal that has roiled the Trump administration.