Photo by Ryan Pierse/Getty Images.

File this under “?”: Two members of Russian feminist punk collective Pussy Riot are set to appear on the next season of House of Cards.

While the show was filming in Baltimore over the weekend, two of Pussy Riots members, Nadya Tolokonnikova and Maria Alyokhina—who were arrested in 2011 for an impromptu anti-Putin performance inside a historic cathedral in Moscow—were spotted on set. A staffer of the show confirmed to the Baltimore City Paper that the duo were filming scenes for the hit show’s upcoming third season.

For a show about the ruthless, cutthroat politics of one American politician—who will stop at nothing to take down those who stand in his way—it’s an interesting choice for Tolokonnikova and Alyokhina to appear in it. They were released from prison in 2013 after serving a 22-month sentence for their “punk prayer” performance, and at the Sochi Winter Olympics, they were attacked by pro-Putin militia members.

According to the City Paper, the nature of their appearance in the upcoming season of House of Cards is unknown, but the paper writes that “their appearance may signal a shift towards foreign policy in the show’s third season, but [City Paper’s] source would confirm no more than their presence.”