Donald Trump Jr.’s lawyer wants the House Permanent Select Committee on Intelligence to investigate leaks he claims took place during and after the first son’s sitdown with the committee last week, a new report said Tuesday.

Attorney Alan Futerfas sent a letter to Rep. Mike Conaway of Texas, who is heading up the committee’s probe of Russian interference in the election and possible collusion by the Trump campaign, New York magazine reported.

The letter, a copy of which was obtained by the magazine, states that Trump Jr. and his lawyers were told that the interview would be “kept strictly confidential and not discussed publicly unless and until the full committee voted to release the transcript.”

Futerfas says that while the interview was still under way, “members of the committee and/or their staff began selectively leaking information provided during the interview to various press outlets, most notably CNN.”

The letter cites tweets from CNN’s congressional reporter Manu Raju, which were sent at 1:01 p.m. and 4:29 p.m., as evidence of leaking.

It also notes a story by Raju and CNN reporter Jeremy Herb that said that the president’s eldest son told the committee that he spoke to White House Communications Director Hope Hicks and not his father about how to handle reports about his June 2016 meeting at Trump Tower with shady Russian lawyer Natalia Veselnitskaya.