In April 2002, Germany suffered its worst school shooting when a gunman killed 17 people, including himself, at a high school in the eastern city of Erfurt.

早在2002年4月，德国遭遇了最严重的一起校园枪击案：一名持枪者在埃尔·福特东部市区的一所高中内打死17人，包括他自己。

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Wednesday's attack was the most deadly school-shooting in Germany since 2002, when a former school pupil in the eastern city of Erfurt killed 14 teachers, two pupils and a police officer.

BBC: German probe into school shooting