NEW : Protesters launch fireworks into government buildings in Kiev early Sunday morning . Police : Opposition says police were in the building to launch attacks on them . On Saturday the opposition leaders rejected Ukrainian president 's peace offer . President Viktor ##iya had offered government posts to opposition leaders , according to a government spokesman .
NEW : Protesters launch fireworks into government building in Kiev early Sunday morning . NEW : Opposition says police were using the building to launch attacks on them . On Saturday the opposition leaders rejected Ukrainian president 's peace offer . President Victor Yanukovych had offered government posts to opposition leaders , according to a government statement .