John Dean, the former counsel to Richard Nixon, believes President Donald Trump's White House is "in cover-up mode."

Dean's comments came during an interview with MSNBC.

And they follow FBI Director James Comey's testimony on Capitol Hill that investigators are looking into possible links between Trump's campaign and the Russian government, The Hill reported. Comey also said he had no evidence to support Trump's accusations that former President Barack Obama has wiretapped Trump Tower.

Dean cautioned the hearings into Russia's meddling in the campaign are still very early.

"I was more stunned by the reaction of the White House and their handling of it, which seemed to me over-the-top," Dean told MSNBC.

"In fact they are in a cover-up mode. There's just never been any question in my mind about that. I've been inside a cover-up. I know how they look and feel. And every signal they're sending is ‘we're covering this up.'

"Experienced investigators know this. They know how people react when they're being pursued. This White House is not showing their innocence. They're showing how damn guilty they are, is what we're seeing. They seem to have learned nothing from history."

Dean was charged with obstruction of justice during the Watergate scandal, according to The Hill.