Ukraine's embattled president offered to make a top opposition leader prime minister, but protest leaders vowed demonstrations would continue and violence erupted early Sunday as a large crowd attacked a government hall with police stationed inside, according to AP. Arseniy Yatsenyuk, a former foreign minister who led efforts to bring Ukraine closer to the European Union, told a large crowd on Kiev's central square that while he was not turning down the offer, President Viktor Yanukovych must still meet several key demands of the opposition and that talks will continue. In the dark of night, demonstrators threw firebombs into the Ukrainian House building and setting off fireworks, and police responded with tear gas. Although the crowd created a corridor at the building's entrance apparently for police to leave, none were seen coming out. The building under attack is about 250 meters (yards) down the street from Independence Square, where mostly peaceful demonstrations have been held around the clock since early December and where protesters have set up an extensive tent camp. The assault started after an estimated 200 police were seen entering the building and speculation spread that they were preparing to disperse demonstrators.