Tonnes of dead fish have been hauled out of the River Oder, which flows along part of Poland's border with Germany, and officials warned people not to enter the water while the Polish government pledged to investigate possible contamination.
Volunteers and anglers have removed at least 10 tonnes of dead fish from the 200-kilometer stretch of the river north of Olawa in southwest Poland, Przemyslaw Daca, head of State Water Holding , said on Thursday. Daca, whose agency manages Polish national waters, called the situation a gigantic ecological catastrophe.
