Donald Trump Jr has admitted to meeting with Russian lawyer Natalia Veselnitskaya, who claimed to have damaging information about Hillary Clinton, during last year's presidential campaign.
The president's son has issued a statement saying Veselnitskaya claimed in a meeting last June "that she had information that individuals connected to Russia were funding the Democratic National Committee and supporting Ms. Clinton".
However, Trump Jr said the meeting - at which the president's son in law Jared Kushner and then-campaign head Paul Manafort also attended - was not fruitful:
"Her statements were vague, ambiguous and made no sense. No details or supporting information was provided or even offered. It quickly became clear that she had no meaningful information."
Nothing else came of the meeting, the statement said, adding: "My father knew nothing of the meeting or these events."
Trump Jr published his statement following a New York Times article which revealed that the meeting with Veselnitskaya, said to have links to the Kremlin, took place in Trump Tower, just two weeks after Donald Trump secured the Republican nomination.
The Times said Trump Jr had told the paper in March that he had not met any Russian nationals to discuss campaign-related matters.
The FBI and Congress are both investigating whether Trump campaign officials colluded with an alleged Kremlin plot to undermine Clinton's presidential campaign.
In May, Kushner was named a "person of interest" by the FBI, while Manafort and Michael Flynn are more formal subjects of investigation.