Russia's opposition leader has reportedly been released without charge after taking part in a protest he instigated against Vladimir Putin.
Alexei Navalny called for demonstrations ahead of the country's forthcoming presidential election - which take place in March.
Earlier, police raided his Moscow offices.
Hundreds of his supporters have begun a nationwide day of protests against the authorities.
One of the first demonstrations was in the far eastern Russian city of Vladivostok - calling on voters to boycott what they say is a rigged presidential election on 18th March.
Chanting "without us" - some said they were not afraid of corrupt authorities: