Donald Trump’s former presidential campaign manager, Paul Manafort, has been charged with conspiring to defraud the US in his dealings with Ukraine.
The 12 charges brought against Mr Manafort and one of his business associates, Rick Gates, include conspiracy to launder money.
They stem from an inquiry into alleged Russian meddling in the US election.
It has emerged that another adviser to Mr Trump was charged this month with lying about his links to Russia.
George Papadopolous was indicted on 5 October with making false statements to FBI agents about his dealings with an unnamed overseas academic who allegedly informed him that the Russians possessed “dirt” on Mr Trump’s presidential opponent, Hillary Clinton.
The charges against Mr Manafort and Mr Gates do not relate to Mr Trump’s campaign but to the alleged concealment of payments from the pair’s Ukrainian business dealings up to 2016.