Former Washington Post reporter Carl Bernstein of Watergate fame posted a three tweet thread Tuesday afternoon claiming “important Republicans” and “high ranking military and intelligence figures” are privately saying President Donald Trump is unfit to serve as president.

Carl Bernstein, image via Twitter avatar

“(1/3) Important Republicans/conservs/Intel-military hi-ups increasingly saying in private that @realDonaldTrump is unfit to be president.”

“(2/3) BC of lack of ethics, competence, ‘temperament/stability.’”

“(3/3)—Reporters should find out how pervasive such talk may be.”

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(1/3) Important Republicans/conservs/Intel-military hi-ups increasingly saying in private that @realDonaldTrump is unfit to be president. — Carl Bernstein (@carlbernstein) August 15, 2017

(2/3) BC of lack of ethics, competence, ‘temperament/stability.’ — Carl Bernstein (@carlbernstein) August 15, 2017

(3/3)—Reporters should find out how pervasive such talk may be. — Carl Bernstein (@carlbernstein) August 15, 2017

Bernstein is an infrequent user of Twitter, having only posted 43 times in the year since he opened his account.