Poison from an unknown source has killedthousands of fish in a German lake, police said Friday according to dpa. At several times during the day on Friday several hundred square metres of the surface of Baldeney lake near the western German city of Essen was covered with dead fish, a police spokesman said. The poison had entered the lake via one of its tributaries, though how it had got into the tributary was unclear. An investigation was underway.
