(CNN) — Two judges on “The Masked Singer” walked off after Rudy Giuliani unmasked himself at the end of a show taping, a source close to the show told CNN Wednesday.

Robin Thicke and Ken Jeong walked off stage following the revelation of Giuliani as a contestant on the popular Fox reality show in which contenders perform in full costume until they are eliminated.

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The former counsel to ex-President Donald Trump and former New York mayor was taping an episode that is expected to air next month, the source said, without providing additional detail.

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CNN has reached out to representatives for Thicke and Jeong.

The incident was first reported by Deadline.

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