Soldiers and residents in southwestern Poland are laying sandbags near swollen rivers around the city of Wroclaw to protect homes and businesses after days of flooding across Central Europe.

By Janis Laizans and Radovan Stoklasa NYSA, Poland/OSTRAVA, Czech Republic (Reuters) -Poland's historic city of Wroclaw readied buses for possible evacuations on Tuesday and the zoo called for volunteers to protect animals from rising water as the death toll in three days of devastating floods across central Europe rose to 21.