Washington (CNN) President Donald Trump denied Monday that he had lashed out at acting Attorney General Matthew Whitaker over developments in the case of Trump's former personal lawyer Michael Cohen, as CNN reported last week.

"I never 'lashed out' at the Acting Attorney General of the U.S., a man for whom I have great respect," Trump tweeted.

He called the report a "made up story."

I never "lashed out" at the Acting Attorney General of the U.S., a man for whom I have great respect. This is a made up story, one of many, by the Fake News Media! — Donald J. Trump (@realDonaldTrump) December 24, 2018

Whitaker was appointed acting attorney general after the President fired Jeff Sessions in November.

CNN cited multiple sources last week who said Trump had taken out his frustrations on Whitaker at least twice over the past month.

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