The former manager of Donald Trump’s presidential campaign, Paul Manafort, is to face charges related to an inquiry into alleged Russian meddling, US media report.
He and his former business associate Rick Gates have been ordered to surrender, according to the reports.
An investigation headed by special counsel Robert Mueller is looking into any links between Russia and the Trump campaign during the vote.
Both sides deny any collusion.
Mr Mueller’s team is known to have conducted extensive interviews with several current and former White House officials as part of the inquiry.
The nature of the charges Mr Manafort and Mr Gates face is not yet clear.