Former acting Attorney General Sally Yates hit President Trump on Tuesday for firing former FBI Director James Comey, saying that while the president has the right to fire the bureau chief at any time, the motivation is suspect.

“I think there are serious questions about both the timing and the motivation” Yates said during an interview with CNN's Anderson Cooper that aired Tuesday.

"The explanations seem to change on almost an hourly basis right now. It seems to me that there's only one truth and we ought to get to that," she added.

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Yates was praised by a number of Democrats after her testimony in the Senate earlier this month, in which she defended her brief tenure in the Trump administration.

While serving as the acting attorney general under Trump, Yates warned officials about former national security adviser Michael Flynn's possibly compromising contacts with Russian government officials.

Trump later fired Yates after she refused to fully back his temporary immigration ban against citizens of several Muslim-majority nations.