The two members of Russian punk group Pussy Riot who were released from prison colonies late last year say they had been arrested in downtown Sochi during the Olympic Games.
This is the first time Nadezhda Tolokonnikova and Maria Alyokhina have been detained by police after their release in December on amnesty from their prison sentences for performing a song opposing President Vladimir Putin in a Moscow church.
"We have been arrested ... and are accused of robbery," Tolokonnikova wrote on her Twitter account.
"When we were arrested, we were not performing any kind of action, we were just walking around Sochi."
Her bandmate Maria Alyokhina confirmed she had also been arrested. They were arrested in central Sochi, about 30 kilometres north of the main Olympic venues.
Tolokonnikova said she and Alyokhina had been in Sochi for more than a day with the aim of performing a new song titled Putin Will Teach You How To Love The Motherland.
She said that before their arrest, they had managed to stage "some Olympic performances", without giving further details.
They had both previously denounced the project spearheaded by Putin to host the Games and called for a boycott of the Olympics.
Radical art group Voina (War), which is run by Tolokonnikova's husband, Pyotr Verzilov, said seven other people had been arrested.
According to Tolokonnikova, another unnamed third member of Pussy Riot was also arrested.
The women were convicted of hooliganism in 2012 and sentenced to two years in prison colonies after staging their so-called "punk prayer" in the Cathedral of Christ the Saviour in Moscow. They were released in early December under a Kremlin-backed amnesty.
The stunt came just before Putin's re-election to the Kremlin in March 2012 and was aimed at denouncing the Orthodox Church's support of the Russian strongman during the campaign.
Their jailing turned them from little-known feminist punks who staged a handful of guerilla performances in Moscow to the stars of a global cause celebre symbolising the repression of civil dissent under Putin.
They received support from luminaries ranging from Madonna to Yoko Ono to Myanmar democracy icon Aung San Suu Kyi.
