More than 1,000 people have been arrested in Moscow during an election demonstration.
The detentions came during a protest to demand that opposition members be allowed to run in a local election.
Crowds of more than 3,000 gathered to demonstrate against the exclusion of some candidates from the ballot on September 8.
Authorities had declared it illegal and tried to block participation, with police confronting protesters around the mayor's office in a rally that lasted more than seven hours.
Prominent opposition figure, Alexei Navalny, was sentenced to 30 days in jail on Wednesday for organising the demonstration.

Hong Kong court finds tycoon Jimmy Lai guilty in landmark security trial
Ukraine peace talks stretch into second day at start of pivotal week for Europe
Flash floods kill at least 37 people in Morocco's Safi province
'Hero' who disarmed Bondi gunman recovering after surgery, family says
School bus accident in Colombia kills 17, injures 20
Australia plans tougher gun laws after father and son kill 15 at Bondi Beach
Police to release man detained over Brown University mass shooting
Shooting at Australia's Bondi Beach kills 12
