Chelsea Clinton used William J. Clinton Foundation money to pay for her wedding and personal life, a new batch of WikiLeaks emails revealed Sunday.

In a 2012 email exchange between Doug Band, a former Clinton Foundation employee, and John Podesta, Hillary Clinton’s presidential campaign chairman, Band expressed frustration at Clinton’s actions:

The investigation into her getting paid for campaigning, using foundation resources for her wedding and life for a decade, taxes on money from her parents….

He adds, “I hope that you will speak to her and end this.”

In previously-released emails from the same exchange, Band said he’d learned that Clinton was “conducting an internal investigation of money within the foundation,” and that she had told one of former President George W. Bush’s daughters about it. According to Band, “The bush [sic] kid then told someone else who then told an operative within the republican party.”

“Not smart,” he wrote, to which Podesta replied, “You are perfecting your skills for understatement.”

Several emails released by WikiLeaks have shed light on questionable Clinton Foundation practices, including the acceptance of foreign donations while Hillary Clinton was secretary of state. The foundation admitted to accepting $1 million from Qatar during that time, but didn’t disclose the donation to the Obama administration — a violation of an ethics agreement between the Clinton Foundation and the U.S. government.

According to Reuters, “The agreement was designed to increase transparency to avoid appearances that U.S. foreign policy could be swayed by wealthy donors.”

The FBI is allegedly investigating the Clinton Foundation, as reported by The Daily Caller and CNN Senior Law Enforcement Analyst Tom Fuentes, a former FBI official, among others. According to the Wall Street Journal, the investigation has been a point of contention between Department of Justice officials and FBI investigators.