Washington( CNN) President Donald Trump had been thinking about firing FBI Director James Comey since Election Day, White House deputy press secretary Sarah Huckabee Sanders said Wednesday.

“The President has lost confidence in Director Comey and, frankly, he'd been considering letting Director Comey run since the working day he was elected, ” Sanders told reporters, adding that Deputy Attorney General Rod Rosenstein had raised concerns about the former FBI chief on Monday, prompting Trump to ask him to set his recommendation in writing.

Revelations that Trump had been unconvinced by Comey for his entire transition and presidency were astounding given the White House had previously expressed confidence in the ousted FBI chief multiple times. Sanders also said Trump was not the only one to lose confidence in the FBI director, adding there were deep reservations about him inside the FBI.

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