Authorities are working to secure riverbanks in Poland and Hungary as Storm Boris wreaks havoc in Europe. More than 20 people have died from the weather system and thousands of others have been evacuated from their homes in what is being described as the worst storm to batter the continent in two decades.

The north-east and central regions of Italy are being battered, days after the storm caused widespread flooding in central Europe.

Central Europe began counting the cost of deadly and devastating floods caused by Storm Boris, as the European Union pledged billions of euro in aid to affected countries and northern Italy became the latest area to be inundated by torrential rain.