A passenger jet and a cargo plane have collided over Lake Constance on Germany's border with Switzerland.
Officials in the German state of Baden-Wuerttemberg said a Tupolev and a Boeing 757 were involved in the crash.
The planes are reported to have gone down near the town of Sigmariegen, hitting a road by the lake.
A spokesman for the state government said it was feared there had been many casualties.
The state government said pieces of the planes had been found scattered for kilometres around the crash site.
An eyewitness told German state television that he saw two balls of fire in the sky.