Former Trump White House chief of staff Mark Meadows has informed the House select committee investigating the Jan. 6 attack on the Capitol that he is no longer cooperating with their probe, two sources familiar with the matter tell ABC News.

       In a letter from Meadows' attorney, Meadows' team says that they had intended to cooperate with the committee -- but no more.

       "We agreed to provide thousands of pages of responsive documents and Mr. Meadows was willing to appear voluntarily, not under compulsion of the Select Committee's subpoena to him, for a deposition to answer questions about non-privileged matters. Now actions by the Select Committee have made such an appearance untenable," the letter from George J. Terwilliger II stated.

       MORE: In reversal, former Trump Chief of Staff Mark Meadows to cooperate with Jan. 6 select committee

       Terwilliger, in the letter, said that Meadows "has consistently sought in good faith to pursue an accommodation with the Select Committee," but claims the panel has made an appearance for a deposition untenable because they have "no intention of respecting boundaries concerning Executive Privilege."

       Win Mcnamee/Getty Images, FILE

       In this Oct.23, 2020 file photo White House Chief of Staff Mark Meadows listens as President Donald Trump speaks about a Sudan-Israel peace agreement, in the Oval Office in Washington, D.C.

       The panel, which declined to comment on the letter, suggested last week that Meadows had agreed to come forward for a deposition without preconditions, based on their initial communications.

       It's now possible the committee could bring a floor vote holding Meadows in contempt of Congress, which could lead the Department of Justice to pursue criminal charges as they have already done with former Trump adviser Steve Bannon.

       Meadows' attorney did not immediately respond to a request for comment from ABC News.