Conan O'Brien had the "unusual" and "upsetting" task of breaking the news of Robin Williams' death to a studio full of fans.

The host found out about the beloved comedian's passing while filming Monday night's episode of the TBS talk show -- and broke from his usual format to address the audience and share some kind words with Will Arnett and Andy Richter.

It was an emotional, raw moment, as a "stunned" Conan closed the show by saying "We are thinking of Robin's family, we're thinking about everybody he touched around the world throughout his life. We're thinking about Robin tonight."

For more tributes to the late actor, follow the links below.

Robin's Daughter, Zelda, Tweets Emotional Message After Father's Death
Ben Affleck: He Made Matt and My Dreams Come True
Rufio Actor from "Hook" Pens Heartfelt Message to Robin Williams
"Mrs. Doubtfire" Stars Remember Their Movie Father 
Hollywood Reacts to the Death of Robin Williams 
Ben Stiller on Robin Williams: His Heart Was So Big

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