Special Counsel Robert Mueller has added more charges against Paul Manafort, the ex-chairman of the Trump 2016 campaign, and indicted a top aide.
Russian citizen Konstantin Kilimnik - considered Manafort’s right-hand man in Ukraine - is accused of conspiring with Manafort to obstruct justice.
Earlier this week Manafort was accused of witness tampering.
Manafort is also charged with money laundering, illegal foreign lobbying, and lying to federal officials, reports BBC.
The 69-year-old denies all charges against him.
The new charges against both men - known as a superseding indictment - alleges that they sought to tamper with witnesses ahead of Manafort’s trial next month.
The charges, which were filed in Washington DC on Friday, came days after Mueller asked a judge to revoke Manafort’s $10m (£7.5m) bail, which has allowed him to remain under house arrest at his Virginia home, over the witness-tampering accusations.
Kilimnik was a long-time employee of Manafort’s political-consulting firm, had done extensive lobbying work for him in Ukraine on behalf of the country’s then pro-Russian president Viktor Yanukovych.
He has denied allegations that he has ties to Russian intelligence.
