A total of eight individuals have been formally charged will making illegal contributions to Hillary Clinton’s 2016 presidential campaign, new reports have revealed.

Among those who’ve been charged is one of the key witnesses in special prosecutor Robert Mueller’s investigation into the 2016 US presidential election, George Nader.

Nadler, whose activities were allegedly reported to authorities of a Middle Eastern country, stands accused of anonymously transferring millions of dollars to political committees. Nadler is known to have close ties to the United Arab Emirates, CNN reports.

Nader stands accused of transferring over $3.5 million to various political committees so that they could, in turn, could support Clinton. Possession of child pornography was also among the 53 criminal charges the prosecution cited against Nadler.

According to CNN, although Clinton and her associated campaign finance groups were not explicitly named in the indictment, most of the funds went to support her campaign, a source familiar with the investigation and campaign finance records says.

So far, Clinton, her lawyers, and the Democratic Party have failed to comment on the claims.

Last Spring, Robert Mueller issued a final report on his investigations into the so-called “Russia Probe” and said that he found no evidence of collusion between the Trump campaign and Russian officials during the run-up to the 2016 presidential election. Mueller did, however, list 10 separate instances that, in his view, could constitute obstruction of justice by President Trump.

US Attorney General William Barr, upon reviewing the facts, concluded that Mueller failed to demonstrate that Trump had obstructed justice at any point during the probe.

Russia has also repeatedly denied allegations of interfering in the 2016 presidential election. Trump has called the Mueller investigation a political witch hunt.