A 15-year-old girl was seized by police after she set off an anti-attack spray in a crowded museum on a school trip injuring nearly 60 people.
Officials say 27 museum-goers had to be taken to hospital after the spray went off in the lobby as visitors queued for the lifts.
A further 30 needed medical treatment on the spot after the building in Bremerhaven, northern Germany, was evacuated.
