Weigel shared a photo of Trump’s rally taken before it had started, tweeting, “packed to the rafters,” in an apparent taunt aimed at the president Saturday. He posted the tweet in response to one of Trump’s own tweets, in which the president said the “arena was packed to the rafters, the crowd was loud, loving and really smart.”

Of course, Trump being Trump, he tweeted about Weigel’s tweet, tagging both the journalist and the Washington Post and demanding an apology from “FAKE NEWS WaPo!”

Weigel responded with an apology, and explained he “was confused by the image of you [Trump] walking in the bottom right corner,” and that he deleted it as soon as he was informed of the mistake.

He further explained his tweet in an exchange with another user, writing, “It was a bad tweet on my personal account, not a story for Washington Post. I deleted it after like 20 minutes. Very fair to call me out.”

And call him out Trump did. He later tweeted “@daveweigel of the Washington Post just admitted that his picture was a FAKE (fraud?) showing an almost empty arena last night for my speech in Pensacola when, in fact, he knew the arena was packed (as shown also on T.V.). FAKE NEWS, he should be fired.”