President Donald Trump’s son-in-law and senior adviser, Jared Kushner, is under FBI scrutiny as part of the Russia investigation.
US media report that Investigators are believe to has significant information relevant to the inquiry. The FBI is looking into potential Russian meddling in the 2016 election and links with Mr Trump’s campaign.
The President Trump denies any collusion. Mr Kushner’s lawyer said his client would co-operate with any inquiry. President Trump has described the situation as “the single greatest witch hunt of a politician in American history”.
US intelligence agencies believe Moscow tried to tip the election in favour of the Republican, who beat his Democratic rival Hillary Clinton.