A veteran paparazzo is suing 2 Chainz, claiming that he was knocked unconscious by the rapper's bodyguard in the lobby of NBC studios last week.

R.J. Capak, a celebrity photographer for over three decades, told the Daily News he was waiting for Rose McGowan outside the 50th Street studio last Friday when he came across 2 Chainz and started filming. The rapper, who has performed in a pink "trap" wheelchair since fracturing his leg over the summer, was accompanied by his tiny dog, "Trappy," and Rory Smith, a bodyguard who held his crutch.

"His pink wheelchair was there, the little dog is there, and he hands his bodyguard his crutch,” Capak recalled. "I ran into the lobby, everything was all good, then the bodyguard came at me with the crutch like he’s gonna joust me."

Capak told the Daily News that he was knocked unconscious after hearing a metal crack, and then woke up on the ground. According to an NYPD spokesperson, Capak alleges that Smith intentionally struck him in the face with a closed fist. Smith was arrested on assault charges shortly after, and is due back in court on December 12th, according to a criminal complaint filed by the Manhattan District Attorney's office.

"We believe NBC has video from the premises with a clear view of what happened and that the DA's office based its arrest and prosecution on that video," Capak's attorney, Sanford Rubenstein, told Gothamist.

In the meantime, Capak will soon file a civil complaint against both Smith and 2 Chainz, Rubenstein said. The attorney added that his client remains in a lot of pain, and has been unable to return to work.

A representative for 2 Chainz did not respond to a request for comment.