Trump's son-in-law Kushner under FBI scrutiny in Russia probe

US President Donald Trump's son-in-law, Jared Kushner, a senior White House adviser, is under scrutiny by the Federal Bureau of Investigation in the Russia probe, the Washington Post and NBC News reported on Thursday.

Kushner is being investigated because of his meetings in December and other possible interactions with the Russian ambassador and a banker from Moscow, the Post reported, citing people familiar with the investigation.

Kushner is the only current White House official known to be considered a key person in the probe, the newspaper reported.

The interest in Kushner does not mean investigators suspect him of a crime or intend to charge him, the officials told NBC News.

One of Kushner's attorneys, Jamie Gorelick, said in a statement her client would cooperate with the investigation.

“Mr. Kushner previously volunteered to share with Congress what he knows about these meetings. He will do the same if he is contacted in connection with any other inquiry,” Gorelick said.

The FBI, along with several congressional committees and a special counsel appointed by the justice department, is looking into potential Russian meddling in the 2016 election and links with Trump's campaign.

Trump denies any collusion, and Moscow has repeatedly denied the allegations. The President has described the Russia investigations as "the single greatest witch hunt of a politician in American history".

The controversy has engulfed Trump's administration since he fired FBI Director James Comey on 10 May.