U.S. President Donald Trump offered a veiled threat on Tuesday of a "major" lawsuit aimed at Federal Reserve Chair Jerome Powell in Trump's ongoing dispute over renovations of the central bank.

Trump recently announced he’s nominating his chair of the Council of Economic Advisers, Stephen Miran, to fill a newly opened position on the Fed’s Board of Governors. If confirmed by the Senate, Trump said he anticipates Miran being at the Fed for a matter of months and likely would not nominate him for chair.

In a post on his Truth Social social-media network, Trump again urged the Fed to lower interest rates, writing: “I am … considering allowing a major lawsuit against Powell to proceed because of the horrible, and grossly incompetent, job he has done in managing the construction of the Fed Buildings.”