President Trump's political organization has received a letter from the Senate Intelligence Committee to share any and all documents it has related to Russia, according to a report Friday.

The panel, led by Chairman Richard Burr, R-N.C., and ranking member Mark Warner, D-Va., is conducting one of several investigations into Russian meddling in the 2016 election. Burr and Warner signed off on a letter sent last week to the campaign committee's treasurer, The Washington Post reported, citing two people familiar with the request.

The campaign committee has already been asked by the Senate to preserve documents.

While the Senate intelligence panel has contacted Trump campaign associates like Roger Stone and Carter Page as part of its probe, this is the first time Trump's campaign group has been drawn into its investigation.

The Washington Post also reported Friday that Trump's adviser and son-in-law, Jared Kushner, asked to create a secret backchannel of communications with the Kremlin in December.