One of two jailed members of the Pussy Riot protest band in Russia, Nadezhda Tolokonnikova, has not been seen since Russian officials moved her to a different jail on Oct.21, the Associated Press reported.

Two members of the band were jailed during a politically performance against Putin in Moscow's mainly Orthodox cathedral in 2012, and are serving two-year sentences, according to the AP.

Tolokonnikova, who would not be imprisoned quietly, wrote an open letter denouncing "slave-like" work conditions at the labor colony that recalled "the worst traditions of Soviet-era imprisonment", Buzzfeed reported.

After Tolokonnikova began a hunger strike in September to protest the prison conditions, she was hospitalized and the prison said she would be moved in mid-October to a different facility, the AP reported.

The report was released Saturday by the prison after complaints by her husband said there had been no contact with Tolokonnikova since Oct. 21.

Petya Verzilov, Tolokonnikova's husband, and supporters said they protested near the prison daily making the prison officials annoyed, Buzzfeed reported.

"We think they moved her to a big city to hide her," Verzilov said. "It seems they got sick of these protests."

The Federal Penitentiary Service told Interfax that Tolokonnikova was in transit to a new prison and "in accordance with regulations her family would be informed within 10 days of arrival," the AP reported. Verzilov said no communication has come from the prison.

Another passenger aboard the train transporting Tolokonnikova claims to have seen her on Oct. 24 when the train arrived in the city of Chelyabinsk, in the Ural mountains, on its way to the new penitentiary where she would be kept, BBC News reported. According to the source she was kept there overnight, but there have been no sightings or news of her since.