An internal Federal Reserve report pointed to a series of missteps that drove up the cost of renovating the central bank's headquarters, prompting U.S. President Donald Trump to say former Chair Jerome Powell should resign from the board governor position he still holds.

"The building was over budget, and over budget by record numbers, and at a minimum 'Too Late' Powell should be forced to resign from the Board," Trump posted on social media on Wednesday. He revived the nickname he has long used to mock Powell.

Trump also directed U.S. Attorney General Todd Blanche to examine the Fed inspector general's report and "make a decision as to what action should be taken." Earlier on Wednesday, the Fed report said there was no evidence of any criminal wrongdoing in the renovation project.

"This is Jerome Powell's fault, and he should be forced to resign, IMMEDIATELY! If he does not resign, he should be prosecuted by the U.S. Government at the highest level, for either corruption or incompetence, both of which are totally unacceptable," Trump posted.