Stand-up comedian John Pinette, who was known for his impressions, has died at the age of 50.

The actor, who also starred in the finale of 'Seinfeld', was found dead on Saturday afternoon (April 5th) in a Pittsburgh, Penn., hotel room.

John Pinette
John Pinette died aged 50

The Allegheny County medical examiner's office confirmed to the Pittsburgh Post-Gazette that he died around 2.30pm at the Sheraton Hotel in Station Square.

There was no foul play suspected in his death and an autopsy was not performed by the Medical Examiner as Pinette's personal physician signed off on the cause of death, which was a result of ongoing liver and heart disease.

Pinette, who appeared in films such as 'Junior' (1994), 'Duets' (2001) and 'The Punisher (2004), was currently on a live tour with dates scheduled throughout April and May in the US as well as Canada.

The Boston native reportedly had to cancel several shows last August after entering a rehabilitation facility to deal with a prescription drug addiction. "Thanks to everyone for your concern and well wishes," he wrote on his Twitter at the time. "Want to apologize for having missed shows last weekend, but I hope you understand!"

Fellow comedian Lewis Black took to Twitter to express his sadness over Pinette's sudden death.

"@JohnPinette sad to see him pass into the night and so young he was a funny f**k and a sweet heap of a man," he tweeted. "Hope there's a buffet out there."

Lizz Winstead, the co-creator of The Comedy Network's 'The Daily Show' also tweeted: "John Pinette you were a funny and sweet man and you left us too soon. #RIP."

R.I.P John Pinette.