Pussy Riot member Nadezhda Tolokonnikova has been claimed missing after being transferred to another prison. (Creative Commons)

The news comes in response to Tolokonnikova's husband, Pyotr Verzilov, and other family members telling Buzzfeed that the member of the feminist protest band was "missing," saying that they had not heard from her in days. She was reported to have last been seen by a fellow passenger on the train that supposedly facilitated her transfer on Oct. 24, as it arrived in the city of Chelyabinsk in the Ural mountains.

Verzilov said that the last he had heard of his wife's precise whereabouts was Oct. 21, when guards had put her on a train. According to Russian regulations, her family was to be informed within 10 days of her arrival. But there has been no contact, her husband says.

Russian authorities announced Tolokonnikova's move on Oct. 18, only hours after her husband told CNN that she had gone back on a hunger strike to protest conditions in Penal Colony No. 14 in Mordovia, which she had endured for nine days in protest of the camp's working conditions.

Tolokonnikova and two other Pussy Riot members, Yekaterina Samutsevich and Maria Alyokhina, were sentenced in 2012 to two years in prison on the charges of "hooliganism" and inciting religious hatred after staging an illegal anti-Putin performance at Moscow's Cathedral the Christ the Saviour at the height of the presidential election season. 

ALSO SEE: Pussy Riot Members Sent To Prison Camps

Samutsevich was released after an appeal. Her bandmates, Tolokonnikova and Alyokhina, remained unreleased despite considerable pressure from the West, including appeals from President Obama and Paul McCartney. Their lawyers at the time declared that the penal colonies to which they had been exiled were "the harshest camps of all possible choices."

In Mordovia, Tolokonnikova said inmates were forced to work 16 hours a day producing police uniforms, the LA Times reported. "Your hands are pierced and scratched by sewing needles, your blood spread across the table," she said.

She also said that the sanitary conditions and food were disgusting and that she'd gotten a death threat from a prison official. 

ALSO SEE: Pussy Riot One Year After The 'Punk Prayer'

Tolokonnikova's husband and a group of supporters regularly protested nearby the prison. Because of her high-profile protesting efforts, he said he believed that Russian authorities wanted to "cut her off from the outside world." 

For more Neon Tommy reporting on Pussy Riot, go here. 

Reach Executive Producer Michelle Toh here.