Russian opposition activist Lyubov Sobol, an ally of
Kremlin critic Alexei Navalny, was detained by
police on Monday after a weekend protest in Moscow, Navalny's spokeswoman said on Twitter.
A few thousand Russians took to the streets of
Moscow on Saturday to demand free
elections to the capital's city legislature on Sept. 8, defying a ban enforced by detentions during previous protests.
Protesters have been calling for the release of activists detained in earlier rallies, and Sobol on Saturday described the arrests as "mayhem," blaming it on the city government.