By Emily Exton
Updated December 06, 2010 at 07:15 PM EST

Justin Bieber canceled a TV appearance on Saturday after another guest was critically injured in front of a live audience, People reports. Bieber was scheduled to appear on Wetten, dass…? (“Wanna Bet?”), a 29-year-old German variety show, when Samuel Koch, 23, suffered serious back and spinal injuries after attempting to jump over an approaching car using spring-powered stilts.

Bieber described the show’s decision to cancel all subsequent filming on Twitter: “Just want to let my people in Germany know I won’t be on Wetten Dass tonight as an accident has taken place and we all don’t think it is right to continue. Please pray for Samuel Koch & his family as we wait and hope for his health and safety [sic].” Koch underwent surgery on Sunday, and has since been put into an artificial coma. According to the German newspaper Bild, a doctor described Koch as being in an “extremely critical stage.” Bieber apologized to expectant fans for the cancellation: “Germany I’m sorry we couldn’t perform tonight but some things are more important than putting on a show. We will be back I promise. Thank u [sic].”

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