Russian police and investigators have raided the homes of several opposition leaders on the eve of a planned protest in Moscow.
The Federal Investigative Committee said in a statement Monday the searches targeted the organizers of an earlier rally, held last month to protest against President Vladimir Putin.
Russia's main investigation agency said it planned to conduct about 10 searches Monday.
Opposition leaders are hoping to draw a large crowd for Tuesday's protest, which comes days after Mr. Putin signed into law a bill dramatically raising fines for people involved in unauthorized rallies.
Burma's president declared a state of emergency Sunday night for a riot-hit western state, wracked by deadly sectarian violence between Buddhists and Muslims.
Thein Sein warned in a televised address to the nation that if the violence in Rakhine state spreads further, it could put the country's moves toward democracy in danger.
He invoked the emergency measure following three days of violence in Rakhine state between Buddhists and Muslims, in which at least seven people were killed and hundreds of buildings were set ablaze.
The Burmese leader said that violent attacks fueled by "hatred and revenge based on religion and nationality" could spread to other parts of the country. He said if that happens, the country's stability and peace, democratization process and development could be severely affected.
On Saturday, the Burmese government sent additional security forces to Rakhine, near the border with Bangladesh, to restore peace and established a curfew.