President Trump has ratcheted up his claim that the Obama White House spied on his 2016 campaign, charging in a new book that it was a “treasonous” act by the former Democratic president.

“What they did was treasonous, OK? It was treasonous,” he told author Doug Wead for his upcoming book, "Inside Trump's White House: The Real Story of His Presidency."

“The interesting thing out of all of this is that we caught them spying on the election. They were spying on my campaign. So you know? What is that all about?” said Trump.

“I have never ever said this, but truth is, they got caught spying. They were spying,” said Trump who then added, “Obama.”

In 2017, Trump tweeted that he felt the Obama White House “had my wires tapped” in Trump Tower. He later said he didn’t mean it literally but that he felt his campaign was being spied on.

Attorney General William Barr earlier this year said he was looking into whether “improper surveillance” may have occurred in 2016.

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