"Stephen is experiencing symptoms consistent with a recurrence of COVID," the tweet read. "Out of an abundance of caution for his staff, guests, and audience, he will be isolating for a few additional days. The Late Show will not be taping new episodes until further notice."
Colbert jokingly reacted to the show's message with a post on Twitter, writing: "Worst. Sequel. Ever."
This week's guests were set to include former NBA star Shaquille O'Neal, comedian Sarah Silverman, Downtown Abbey's Hugh Dancy, Winning Time's Tracy Letts, former U.S. Secretary of Defense Mark Esper, CNN anchor Jake Tapper and The Masked Singer's Ken Jeong.
Sharon Van Etten, Beach House and Regina Spektor were scheduled to perform on the show.
At the time, Colbert assured fans that he was "feeling fine." The late-night host is vaccinated and boosted against the coronavirus.