Wikileaks plans to release further leaks of emails sent by Hillary Clinton from her private server, founder Julian Assange has revealed.

Clinton, the presumptive Democratic presidential nominee, is under FBI investigation to determine whether she broke federal law by using her private email in sending classified information. A new WikiLeaks release of Clinton emails is likely to fan a controversy that has bedevilled her campaign and provide further ammunition for Donald Trump, her Republican presidential rival, who has used the issue to attack her.

Assange’s comments came in an interview on ITV’s Peston on Sunday. “We have upcoming leaks in relation to Hillary Clinton … We have emails pending publication, that is correct,” Assange said.He did not specify when or how many emails would be published.

“Wikileaks has a very big year head,” he said in an interview with ITV’s Peston on Sunday.

Mr Assange said Wikileaks has accumulated a large cache of information about the Democratic presidential nominee that could be used to bring an indictment against her.

“Loretta Lynch [the attorney general]…is not going to indict Hillary Clinton,” he conceded.

“It’s not possible that could happen, but the FBI could push for concessions from [a] new Clinton government in exchange for its lack of indictment.”

Mr Assange said the emails Wikileaks holds about Ms Clinton contain “very strong material”, such as the former secretary of state allegedly instructing her staff to remove the “classified” header from a classified document and send it by unclassified fax.

The Wikileaks founder added that Ms Clinton is a problem for freedom of the press because of her push for Wikileaks to be prosecuted.

Watch the video for the full interview: