Anti-government protesters have seized the Ukrainian justice ministry in Kyiv, after rejecting President Viktor Yanukovych's offer to name an opposition leader as prime minister.
Demonstrators used sandbags and garbage cans to build a barrier around the ministry Sunday.
President Yanukovych offered to name opposition leader Arseniy Yatsenyuk as prime minister, and former boxing champion Vitaly Klitschko as his deputy.
Yatsenyuk told a crowd that the opposition is "not afraid" of accepting more political responsibility. But he said Mr. Yanukovych still has to meet several demands. They include early elections, freedom for jailed protesters, and repealing anti-protest laws.
Marchers took to the streets in late November after Mr. Yanukovych backed out of a trade deal with the European Union in favor of closer ties to Russia.