More than 20 people in Germany have been injured after a man with an axe went on the rampage on a train, German media report.
A police operation including a helicopter is under way in Heidingsfeld, a part of the city of Wurzburg in southern Germany.
Local media (in German) wrote that 21 people had been injured and a suspect appeared to have been shot.
The train line between Wurzburg-Heidingsfeld and Ochsenfurt is closed.
The German news agency DPA reported that the police said some of the victims' injuries were life-threatening.