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.

Court papers show George Papadopoulos admitted the talks happened while he worked for Donald Trump, not before.

He said he had been told the Russians possessed “dirt” on Hillary Clinton.

The charges against Papadopoulos are the first to be brought by Robert Mueller, the special counsel investigating alleged links between Russia and the Trump campaign.

Analysts say it has the potential to damage the us leader because it relates directly to his campaign.