A Justice Department official is set to probe Federal Reserve Governor Lisa Cook after she was accused by a member of President Donald Trump’s administration of committing mortgage fraud, according to a letter sent Thursday to Fed Chair Jerome Powell.

Trump on Wednesday called for economist Lisa Cook to resign from the Fed Board of Governors over allegations of mortgage fraud.

Cook responded to Pulte in a statement, "I have no intention of being bullied to step down from my position because of some questions raised in a tweet."