President Trump has promised a monumental shift within the FBI with a major change in leadership at the very top after former Director Christopher Wray and acting director Paul Abbate resigned.

A longtime FBI deputy director who had been expected to replace Director Christopher Wray on an acting basis is retiring from the bureau.

Paul Abbate, the deputy director of the FBI who took over temporarily as acting director after the resignation of Christopher Wray, retired from his post on Monday, an FBI official said. It was not immediately clear who will be taking over as acting director of the bureau until President-elect Donald Trump's FBI director nominee Kash Patel can be confirmed by the U.