A court in Russia has placed the prominent opposition activist Sergei Udaltsov under house arrest. Mr Udaltsov is charged with organising "mass disorder" during a protest in Moscow in May 2012. He was arrested in October before being released.
The leader of the Left Front coalition has rejected the accusation, saying it is an attempt to discredit the opposition to President Vladimir Putin. If convicted, Mr Udaltsov faces between four and 10 years in prison.