Paul Manafort, Donald Trump's former campaign manager, held secret talks with WikiLeaks founder Julian Assange in the Ecuadorian embassy in London and visited around the time he joined Trump's campaign, the Guardian reported Tuesday. The report said Manafort saw Assange in 2013, 2015 and in the spring of 2016, when he was made a key figure in Trump's 2016 campaign. The Guardian cited unidentified sources and said it's unclear why Manafort wanted to meet with Assange and what was discussed. The meetings are likely to interest Special Counsel Robert Mueller. On Monday, prosecutors said Manafort had lied to investigators after making a plea deal to cooperate with Mueller.