A prominent Democratic fundraiser who served as a national finance chairman of Hillary Clinton’s presidential campaign has been accused in an alleged $74m scheme to defraud Citigroup, federal prosecutors said on Monday.

Hassan Nemazee was accused of using false documents to secure a loan of $74m from Citi. He was on his way to Rome on Sunday when he was interviewed by federal investigators at Newark Liberty International Airport. On Monday, prosecutors said, he repaid the loan.