Immediately after his set at DC Improv tonight (but during the next person's set), Dan Nainan was arrested for punching Newsweek Daily Beast correspondent Josh Rogin in the face after Rogin commented on the performance via Twitter.

The escalation looked something like this:

According to Nikki Schwab at Washington Whispers, who witnessed the entire thing and spoke to Rogin after, Nainan approached Rogin who was sitting in the back of the theater:

“Dan Nainan comes over to me and says, ‘Are you Josh Rogin,’ and I said yes and then he punched me in the jaw, then he pushed me, then he walked away and about 10 seconds later he came over and punched me again,” Rogin told Whispers directly after the fight. (Whispers was also an eyewitness to the incident.) “At that point I yelled, ‘What the hell are you doing?’ other people noticed and they courted him off and the bouncers escorted him from the show room and we called the police and he’s in the process of being arrested,” Rogin continued.

Twitter fight IRL, I guess.