Jared Kushner, Donald Trump's son-in-law and a senior White House adviser, is now under heavy scrutiny by FBI investigators looking at the Trump campaign's ties to Russia.
Investigators believe Mr Kushner has significant information that is relevant to their inquiry, NBC reports. It doesn't mean they suspect him of criminal acts or intend to charge him.
US officials told NBC Mr Kushner is not in the same category as Michael Flynn, who has been considered a subject of the investigation.
"Mr Kushner previously volunteered to share with Congress what he knows about these meetings," Kushner's lawyer, Jamie Gorelick, told NBC News. "He will do the same if he is contacted in connection with any other inquiry."
Mr Kushner is married to Mr Trump's daughter Ivanka Trump.