A river has broken its banks in Poland's capital in more flooding that has already killed 12 people in the country since last weekend. The Vistula River broke its banks in a nonresidential area in Warsaw and local TV footage showed emergency workers and residents erecting sandbags Sunday. For now, it is only affecting one area in Warsaw but authorities have told people to be ready to evacuate if necessary, according to a report of the Associated Press. Schools near the river will be closed Monday as a precaution. In the western city of Wroclaw, most of one neighborhood, Kozanow, was covered by water after the Oder River broke its banks in two places Saturday. There, waters rose more than a yard around multistory apartment buildings.