Sen. Richard Burr (R-N.C.), chairman of the Senate Select Committee on Intelligence, and Sen. Mark Warner (D-Va.), the committee’s vice chairman, sought Wednesday to invite former FBI director James Comey to testify and also requested documents related to the investigation into Russia’s meddling in the 2016 U.S. elections:

Today, the Committee sent two additional letters seeking information related to the Committee’s ongoing investigation. The first was sent to former FBI Director James Comey seeking his appearance before the Senate Select Committee on Intelligence in both open and closed sessions. The second was sent to Acting FBI Director Andrew McCabe, seeking any notes or memorandum prepared by the former Director regarding any communications he may have had with senior White House and Department of Justice officials related to investigations into Russia’s efforts.

Warner said Wednesday that he expected “an answer from acting director McCabe in the next 72 hours.”

The senator speculated that Comey could come for open and closed-door testimony before the committee early next week. “I can imagine after kind of what [Comey’s] been through that taking a week to chill out would seem appropriate, but my expectation is that we’ll hear something early next week.”

The Virginia senator said the committee also had questions about “the president’s comments about tapes and secret tapes,” transcripts from the meeting with Russian officials, and obtaining Comey’s memos.

“And that’s just Wednesday,” he added.