Jared Kushner, senior adviser and son-in-law to President Trump, is now under investigation as part of the FBI's probe into Russian election meddling, according to multiple reports on Thursday.

Kushner could be the White House staffer who last week was reported to be under surveillance by the intelligence agency looking at any connection between Trump's campaign and Russia.

Investigators said Kushner has critical information relating to their probe and is not suspected of committing a crime, according to NBC News.

Kushner's status as a "person of interest" is different than former Trump aides Paul Manafort and Mike Flynn, both of whom are formal subjects of investigation. Flynn and Manafort have been the recipients of grand jury subpoenas.

Kushner's attorney put out a statement in response to the Washington Post and NBC News reports saying his client is willing to speak with the FBI if he is approached.

"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," said Jamie Gorelick, Kushner's attorney, according to CNN.

Kushner met twice last year with Russian officials, including Russian Ambassador Sergei Kislyak in December and an earlier meeting with Russian banker Sergey Gorkov. Gorkov is chairman of Vnesheconombank, which is owned by the Russian government.

The Trump family member joined the campaign in 2015 despite lacking a political background.