Journalist Carl Bernstein says there’s “no way” the latest investigation into Democratic presidential nominee Hillary Clinton’s handling of sensitive government information is comparable to the Watergate scandal that he helped expose.

FBI Director James Comey said Friday the bureau was reviewing emails found on politics/fbi-hillary-clinton-email.html"}}">devices belonging to Clinton aide Huma Abedin and former Congressman Anthony Weiner, who is under federal investigation over allegations that he traded sexually explicit messages with an underage girl. Republican nominee Donald Trump claimed the latest probe is “a far bigger scandal than Watergate ever was.”

But Bernstein shot down that comparison in a tweet on Saturday:

No way HRC emails 'bigger than watergate' -or close. Watergate was about a criminal Potus & 48 aides/co-conspirators found guilty. — Carl Bernstein (@carlbernstein) October 29, 2016

Not to minimize her reckless and mendacious handling of email-server matters --but altogether different league than watergate. — Carl Bernstein (@carlbernstein) October 29, 2016

Bernstein explained on CNN Friday night why the investigation into Clinton’s emails is completely different to the one he helped uncover that led to the resignation of Richard Nixon as president in 1974.

“Watergate was about a criminal President of the United States who presided over a criminal administration from the day he took office to the day he left,” he said.

Bernstein did argue Clinton’s handling of government emails while serving as secretary of state was “a hugely serious event,” calling the scandal “the greatest threat to her candidacy for president” in a different interview with CNN.

“We don’t know what this [new probe] means yet, except that it’s a real bombshell,” he said. “And it is unthinkable that the director of the FBI would take this action lightly, that he would put this letter forth to the Congress of the United States saying there is more information out there about classified emails and call it to the attention of congress unless it was something requiring serious investigation.”

Former Assistant U.S. Attorney Nick Akerman, who served as an assistant special Watergate prosecutor, also shot down Trump’s claims, saying it’s “totally absurd” to compare the email problem to the 1970s scandal. Akerman also said Comey “acted totally inappropriately” in sending the letter to Congress so close to the presidential election.

Editor’s note: Donald Trump regularly incites political violence and is a serial liar, rampant xenophobe, racist, misogynist and birther who has repeatedly pledged to ban all Muslims — 1.6 billion members of an entire religion — from entering the U.S.