Federal Reserve Chair Jerome Powell on Wednesday said he will stay on the Board of Governors for an indefinite period while a probe into the renovation of the central bank’s headquarters continues.

“I’ve said that I will not leave the board until this investigation is well and truly over with transparency and finality, and I stand by that. I’m encouraged by recent developments, and I’m watching the remaining steps in this process carefully,” Powell said near the beginning of his post-meeting news conference.

“My decisions on these matters will continue to be guided entirely by what I believe is in the best interest of the institution and the people we serve after my term as chair ends on May 15, and will continue to serve as a governor for a period of time to be determined,” he added.

The statement resolves for the moment a key question that hovered over the Federal Open Market Committee meeting.

Markets already had largely expected to keep its key interest rate steady, with the bigger question over Powell’s future.

The chair, who has served eight years, congratulated his appointed successor Kevin Warsh, whose nominee cleared a pivotal hurdle earlier Wednesday when the Senate Banking Committee voted to move Warsh forward to the full floor for a vote.

“I plan to keep a low profile as a governor,” Powell said. “There’s only ever one chair ... When Kevin Marsh is confirmed and sworn in, he will be that chair.”

Beyond Warsh, Powell addressed the intense criticism he has faced from President Donald Trump, who appointed Powell to the job during his first term in office.

Powell called the criticism “unprecedented in our 113-year history” and said he worries about the impact on the institution.

“I worry that these attacks are battering the institution and putting at risk the thing that really matters to the public, which is the ability to conduct monetary policies without taking into consideration political factors,” he said. “It is so important for our economy, for the people that we serve, that they can depend, over time, on a central bank that operates that way, free of political influence.”