According to The Hill, the Senate Intelligence Committee sent a request to former FBI Director James Comey to testify in public regarding the probe into the White House’s alleged ties to foreign governments.

The letter was sent by Committee Chairman Richard Burr (R-NC) and ranking member Mark Warner (D-VA) this Wednesday and also asks Comey to participate in a closed-door session. Although they haven’t yet received a response, committee members are “optimistic” that Comey will testify.

“I hope he’ll accept our invitation. I believe he will,” Warner reportedly said.

Joint statement with @SenatorBurr: the Senate Intelligence Committee has invited James Comey to testify in open & closed session. pic.twitter.com/lRk0gq9iSV — Mark Warner (@MarkWarner) May 17, 2017

This Saturday, the New York Times reported that Comey declined an invitation to testify in a closed door session, saying he wants his testimony to be public. The offer came in the wake of a series of early-morning tweets from President Trump, who was clearly agitated over chatter that says he fired Comey in response to the FBI’s investigation into the White House’s alleged ties to Russia.

A letter was also sent to acting FBI Director Andrew McCabe, asking him to provide “any notes or memorandum” connected to Trump’s regarding Trump’s alleged meddling in the FBI’s investigation.

Featured image via Center for Strategic and International Studies