Ricky Gervais and Tina Fey have signed up to star in the sequel to 2011's hit Muppets revival movie, a report says.
The Muppets... Again! will be a 1960s-style crime caper film which sees the Muppets, including Kermit and Miss Piggy, accidentally embroiled in an international theft plot as they attempt to take their show on a world tour.
Gervais will play a sidekick to the film's main villain Constantine, who looks exactly like Kermit, while Fey has taken the role of a prison guard called Nadya, Reuters reports.
While hosting the recent Golden Globe awards, Fey joked that Gervais could not be at the ceremony because he was "no longer technically in showbusiness".
Flight of the Conchords star Bret McKenzie, who won an Oscar for his work on The Muppets, has signed on to compose the soundtrack.