Alexei Navalny detained at the intersection of Tverskaya street and alley Mamontov. About this on twitter said the activist FBK Roman Rubanov.
According to the reporter, the crowd tried to bus, in which was placed the Bulk, to leave Tver. As a result, the Riot police had to surround the bus so he could go. On the road before the bus rolled the car, and then there was a spontaneous clashes of protesters with the police.
Navalny arrived at the anti-corruption action around 14:00 and almost immediately was arrested.