A teacher was killed and 14 schoolchildren were injured after a car hit a crowd on a busy street in the German capital, Berlin.
The group was on a school trip to Berlin from the state of Hesse. A second teacher was seriously hurt.
Police say the driver, a 29-year-old man, was arrested at the scene.
Berlin Interior Affairs Minister Iris Spranger said evidence suggested the driver was a “mentally ill person running amok”.
The incident occurred shortly before 10:30 (08:30 GMT) in the heart of western Berlin, on one of its busiest shopping streets.
The woman who died has been identified as a schoolteacher who was on a trip with a class of teenagers from the central state of Hesse. Berlin police say she died on the spot.