Strong winds battered Northern and Central Europe on Sunday, killing at least six people in Germany, Poland and the Czech Republic, with authorities watching for oil leaks from a huge freighter that ran aground in the North Sea.

Four victims in Poland and the Czech Republic were killed by falling trees. The storm also knocked out power to thousands of Czechs and Poles, and rail traffic in large parts of northern Germany remained suspended after heavy damage from fallen trees.

Winds reached more than 100 kph (60 mph) in several parts of the Czech Republic and topped out at 180 kph on Snezka, at 1,602 meters the country's highest mountain, Czech Television reported.