Moscow police grab Navalny supporters before rally

Navalny called on his supporters to protest after being arrested last weekend when he returned to Moscow for the first time since being poisoned in August with a military-grade nerve agent. Navalny had been treated in Germany.

Supporters of Navalny took already to the streets in Russia's Far East and Siberia earlier on Saturday to demand his release on a day of nationwide protests that authorities have declared illegal and vowed to break up.

In Moscow, police erected barricades around Pushkinskaya Square as workers were engaged in re-tiling it, an apparent attempt to thwart a demonstration scheduled to start at 1100 GMT.