A Moscow court sentenced three members of the all-female opposition band to two years in prison on August 17 for staging a "punk prayer" at the Christ the Saviour Cathedral in February and calling on the Virgin Mary to rid Russia of Putin.

The sentence drew sharp international criticism of the Russian government, while opposition groups at home have portrayed it as part of a Kremlin clampdown on dissent. Police said earlier this week they were searching for other members of the band.

"In regard to the pursuit, two of our members have successfully fled the country. They are recruiting foreign feminists to prepare new actions," a Twitter account called Pussy Riot Group said.

Defence lawyers of the convicted Pussy Riot members - Nadezhda Tolokonnikova, Maria Alyokhina and Yekaterina Samutsevich - are expected to appeal against their sentences next week.