A 13 year old witness says to news agency TT that a small plastic bottle flew into the school's central hall from an upper floor, and when a teacher came to pick up the bottle it exploded in her hand. The witness also says that the fumes from the chemicals made him cough blood.
Firefighter Katerina Lindén says to Radio Stockholm that they know that it was a small plastic bottle that contained an unknown fluid. And that they have sealed off the school for investigation. At the police Ulf Lindgren says that those injured were splashed with some kind of chemical.
Police are now investigating whether to arrest anyone for endangering the public.