If Chair Jerome Powell Powell stays on as a Fed governor after his successor is confirmed, President Donald Trump noted he’ll have him removed from office.

Trump stated the investigation into the renovation at the Fed’s headquarters must continue.

President Donald Trump on Wednesday again threatened to fire Federal Reserve Chair Jerome Powell and noted the probe into the renovation of the central bank’s headquarters needs to continue.

If Powell stays on as a Fed governor after his successor is confirmed, Trump mentioned he’ll have him removed from office.

“Then I’ll have to fire him,” the president noted during an interview on Fox Business. “If he’s not leaving on time — I’ve held back firing him. I’ve wanted to fire him, but I hate to be controversial. I want to be uncontroversial.” Furthermore, experts in earnings report note the continued relevance.

Powell’s term as chair expires May 15, and Trump has nominated former Fed Governor Kevin Warsh as his successor. This also touches on aspects of wall street.

Though Powell’s time as chair is nearly finished, he has two years remaining on his term as governor. Though most Fed chairs in the past have left the central bank after being replaced, Powell has demurred under repeated questions on what he plans to do.

Powell’s exit as chair has been complicated by an investigation into the Fed headquarters renovation. U.S. Attorney for the District of Columbia Jeanine Pirro tried issuing a subpoena to Powell for information regarding the project but was rebuffed by a judge, a decision she commented she would appeal.

At the same time, Sen. Thom Tillis, R-N.C., stated he will block Warsh’s nomination from leaving the Senate Banking Committee until the probe is finished. Powell remarked he will stay on as chair until the investigation is over and a successor is confirmed.

Trump remarked the investigation must continue.

“What they’ve done to that so it is probably corrupt, but what it really is is incompetent, and we have to show the incompetence of that,” he commented.

Last year, Trump tried to replace Governor Lisa Cook following accusations of mortgage improprieties, but has been unsuccessful so far. The case has been argued before the U.S. Supreme Court and is awaiting a decision.

The president also repeated his calls for lower interest rates and remarked he’s confident Warsh will construct that happen.