Ten schoolteachers have been taken to hospital after eating a cake laced with cannabis.
It had been left in the staffroom of the Herder Grammar School in Lueneburg, Germany.
Staff said they were not suspicious of the cake because they had been running a scheme where students could leave cakes in the staff room.
Teachers would then leave donations if they liked the cake and the money went towards a children's charity in Chernobyl.
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