John Pinette

Rick Diamond/Getty Images for CMT

Famed standup comedian John Pinette has died at the age of 50.

The funnyman, best known for his role as the victim of a carjacking on Seinfeld's finale, was found dead Saturday in his hotel room, the Allegheny County Medical Examiner's office confirmed to E! News.

An autopsy will not be conducted considering that he died of natural causes.

According to the Pittsburgh Post Gazette, Pinette had been suffering from liver and heart disease and reportedly entered rehab last year for prescription drug addiction.

"Thanks to everyone for your concern and well wishes," he tweeted at the time. "Want to apologize for having missed shows last weekend, but I hope you understand!"

In addition to his role on Seinfeld, Pinette also made appearances in films including "Duets" and "The Punisher."

According to his Twitter page, he was in the middle of touring, with his next comedy show set for April 10-13 at Ontario Improv in Ontario, Calif.

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