Donald Trump has called for an investigation into President Barack Obama after Wikileaks published more of Hillary Clinton’s campaign chairman John Podesta’s emails — including one that suggests the president knew about her private server.

Wikileaks

Wikileaks

“Well, I now see why the president stuck up for Hillary, because he didn’t want to be dragged into it… Because he knew all about her private server,” Trump said in an interview with Reuters.

“This is a big thing. This means that he has to be investigated.”

The email that Trump was referring to was an exchange between top Clinton aide Cheryl Mills and Clinton’s traveling press secretary, Nick Merrill.

Merrill had forwarded Mills a tweet which quoted Obama saying that he learned about Clinton’s private server at “the same time everybody else learned it through news reports.”

“We need to clean this up,” Mills responded to the tweet to campaign chairman John Podesta. “He has emails from her — they do not say state.gov.”

The conversation implies that Obama knew about Clinton’s emails — as he had some from her using her private email address.

Immediately after Obama’s statement, White House Press Secretary Josh Earnest claimed that “was referring specifically to the arrangement associated with Secretary Clinton’s email.”

“Yes, the president was aware of her email address,” Earnest said. “He traded emails with her. That shouldn’t be a surprise that the President of the United States is going to trade emails with the Secretary of State. But the president was not aware of the fact that this was a personal email server and that this was the email address that she was using exclusively for all her business. The president was not aware of that until that had been more widely reported.”

Trump made global headlines when he declared during the second debate that he would appoint a special prosecutor to investigate Clinton’s corruption.

“If I win, I am going to instruct my Attorney General to get a special prosecutor to look into your situation because there has never been so many lies, so much deception,” Trump told Clinton. “There has never been anything like it, and we are going to have a special prosecutor. I go out and speak and the people of this country are furious.”