T.R. Knight has confirmed reports he's leaving hit medical drama Grey's Anatomy, calling his decision a tough one. The actor's character, George O'Malley, appeared to die in the most recent season finale after he was hit by a bus - but Knight still had three years on his contract and was expected to return to the show.

But, following a reported feud with Grey's Anatomy creator Shonda Rhimes over his dwindling role on the show, the actor recently requested permission to leave the series. The request was granted.

He says, "Leaving Grey's Anatomy was not an easy decision for me to make. I am extremely grateful to have had the opportunity to play this character and will miss my fellow cast and crew very much.

"I continue to wish them the very best, and wholeheartedly thank all of the fans who have supported me and the show with such passion and enthusiasm."

A statement from series creator Rhimes reads, "I think I speak for the entire Grey's Anatomy family when I say we wish T.R. Knight the best in his future endeavours. He is an incredibly talented actor and a person whose strength of character is admired by all of us."

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