US President Donald Trump has denied rumors that a series of mini-strokes were behind his unscheduled visit to the Walter Reed Medical Center last year, reported AFP. He called the claims “fake news.”

The US President in November last year made a surprise visit to the hospital. The visit was not scheduled and it ignited speculation at the time of a serious health issue, but the White House insisted he was just doing parts of his annual health exam ahead of time.

However, CNN on Tuesday reported that a new book by a New York Times journalist claims Vice-President Mike Pence was put “on standby to take over the powers of the presidency temporarily” if Trump had to undergo anaesthesia during the visit.

CNN has obtained a copy of the as-yet-unreleased book by Michael Schmidt. Though the author did not specify the sourcing for the claim, if true, it raises fresh questions about the visit.

The CNN report quickly started started a trend on social media, stating that Trump had suffered a stroke and had to be rushed to hospital.

The president took to Twitter Tuesday and wrote,”It never ends! Now they are trying to say that your favorite President, me, went to Walter Reed Medical Center, having suffered a series of mini-strokes. Never happened to THIS candidate – FAKE NEWS. Perhaps they are referring to another candidate from another Party!”

Trump’s personal physician Sean Conley insisted last year that the visit was nothing serious. “He did not undergo any cardiac or neurologic evaluations,” Conley said.