Nadya's husband, Petya Verzilov, told Buzzfeed that he believed she may have been moved to a jail in a big city to discourage anti-government rallies; the Mordovia location had become a magnet for protesters.



Nadya was last seen by a witness in the mountain city of Chelyabinsk on Oct. 24, Verzilov said, where he believes she was transferred temporarily. Russian law requires that families be notified of an inmate's new whereabouts within 10 days of the move.



Nadya, 23, was a key member of the group that was arrested after playing a provocative punk song in a Russian cathedral in 2012. The band said it wanted to call attention to censorship in the country, but members were charged and eventually convicted with "hooliganism motivated by racial hatred." One member had her conviction overturned, but Nadya and another bandmate, Maria Alyokhina, are serving a two-year sentence that is set to end in March.