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. – Jimmy Fallon referred to his portrayal of Chris Rock in a 20-year-old “Saturday Night Live” sketch in which he appeared with a black face (known as a blackface).

LOOK: “Blackface”, “Brownface”: what are these practices and why are they offensive?

Fallon issued an apology on Tuesday after the video and criticism of the scene, originally broadcast on “SNL” in 2000, reappeared on social media.

“While in SNL, I made the terrible decision to pose as Chris Rock with my face painted black. There is no excuse for this, “wrote the presenter of” The Tonight Show “in a tweet. “I am very sorry to have made this unquestionably offensive decision and I thank you all for holding me accountable.”

Fallon was a cast member on “Saturday Night Live” from 1998 to 2004. Rock starred in “SNL” from 1990 to 1993.

On the scene, which is not published on NBC or on the show’s websites, Fallon appeared as Rock on a talk show hosted by Regis Philbin (played by Darrell Hammond).

Fallon joins other entertainment figures, including Sarah Silverman, who apologizes for offensive comedy in the past following criticism online.

CNN has reached out to representatives of Fallon and “SNL” for further comment.