A Moscow theater has been forced to cancel its premiere of the U.S.-made film Pussy Riot: A Punk Prayer after receiving a letter from the city's top cultural official saying theaters that receive state funding should not associate with people who seek to "provoke" society.

Kirill Serebrennikov, the director of the Gogol Center theater, announced the move on his Facebook page on Saturday and posted a copy of the letter. "Until recently, in all interviews, I would declare like a mantra: 'There's no censorship at the theater, there's no censorship at the theater.' That's it, fuck, there's censorship at the theater! Cynical, pointless and stupid," he wrote.

The official letter, signed by Sergei Kapkov, the head of Moscow's cultural department, demanded Serebrennikov cancel the showing of the film, which was set for Sunday afternoon, to be accompanied by a discussion with Maria Alyokhina and Nadezhda Tolokonnikova, two members of the opposition punk group released from prison last week.

Kapkov, seen as a relatively liberal official, wrote that he was "shocked" to learn of the film showing and discussion via social media. "I would like to draw your attention to the fact that the theater run by you is a government cultural institution…and financed from the city budget," Kapkov wrote. "You, as the director of the institution, should show responsibility before the founders and, most importantly, before the audience."

"I deeply believe that a government cultural institution should not associate with those people who provoke such an ambiguous reaction and whose activity is based on the provocation of society," Kapkov wrote.

He continued: "I have no right to get mixed up in your repertoire politics, and I've never done that, but considering this showing is not part of the official schedule, I demand you cancel the showing of the documentary film 'Pussy Riot: A Punk Prayer' and the discussion with the main heroes of the film." Kapkov's spokeswoman could not be reached for comment.

The film, which premiered at the Sundance film festival, was produced and directed by Mike Lerner and Maxim Pozdorovkin. It has been shortlisted for the Academy Award's Best Documentary Feature category and has received wide critical acclaim for telling the story of one of the most notorious modern-day trials in Russia.

Pozdorovkin told BuzzFeed by email from Moscow, where had flown to attend the premiere, that he was "surprised" by the turn of events, but noted that two previous premieres were also forced to be cancelled.