The House Judiciary and Intelligence committees issued a subpoena Tuesday night for Robert S. Mueller III to testify in open session on July 17, and the former special counsel agreed to appear.

In a statement, Judiciary Chairman Jerrold Nadler and Intelligence Chairman Adam B. Schiff said Mueller has agreed to testify before both committees in open session pursuant to the subpoena.

“Americans have demanded to hear directly from the special counsel so they can understand what he and his team examined, uncovered, and determined about Russia’s attack on our democracy, the Trump campaign’s acceptance and use of that help, and President Trump and his associates’ obstruction of the investigation into that attack,” the chairmen said. “We look forward to hearing his testimony, as do all Americans.”

Mueller made his first public statement on his two- year investigation into Russian interference in the 2016 presidential election at the end of May and said he hoped those words would be his final ones spoken to the public. He said if compelled to testify before Congress, he would have nothing to say beyond what was in his report, and then he formally stepped down from the special counsel job.

Democrats, however, still wanted Mueller to testify and have been negotiating to get him to do so, resisting his requests to address lawmakers in a closed session.