An election campaign adviser to
Donald Trump has pleaded guilty to lying to the FBI about the timing of
meetings with alleged go-betweens for Russia.
He said he had been told the Russians possessed "dirt" on Hillary Clinton.
Separately, former Trump campaign manager Paul Manafort pleaded not guilty to charges of money laundering unrelated to the 2016 election.
The charges against Mr Papadopoulos are the first to be brought by Robert Mueller, the special counsel investigating alleged links between Russia and the Trump campaign.
Read more: Trump adviser George Papadopoulos lied about Russian links - BBC News