Washington (CNN) Six House Democrats are calling on FBI Director Christopher Wray to investigate whether President Donald Trump's son-in-law and senior White House aide Jared Kushner leaked classified information to Saudi Crown Prince Mohammad bin Salman, according to a letter obtained by CNN.

The call comes after The Intercept, citing three sources, reported that the Saudi prince -- known casually by his initials, MBS -- told confidantes after their meeting last year that Kushner had discussed Saudi leaders who are disloyal to the crown prince.

"We request the FBI open an immediate investigation to determine if these reports are accurate and to explore the extent to which information and sources may have been comprised," reads the letter from Democratic Reps. Ted Lieu, Gerald Connolly, Donald Beyer, Pramila Jayapal, Peter Welch and Ruben Gallego.

The letter notes that the "integrity of classified information" falls within the purview of the FBI but that "while the President has the authority to declassify and share information, the President's advisers do not."

According to The Intercept, one person "who talks frequently to confidants of the Saudi and Emirati rulers" told the publication that MBS bragged to United Arab Emirates Crown Prince Mohammed bin Zayed that Kushner was "in his pocket." The publication added that the information on the Saudi royals not loyal to him was contained within the President's Daily Brief, a document presented to the President every day that Kushner lost access to earlier this year when near security clearance rules were instituted by chief of staff John Kelly.

Read More