- We have been on site and it is some kind of firework display that went off in the entrance, says Monica Bergström, the police's spokesperson Region East.

The police have now filed a report of vandalism, but there is no suspect yet.

No one injured

The library was open when the firework was thrown in, but it landed in the entrance and no one was around at the time.

That's what Lena Mellqvist, who works as a library assistant, tells us.

- There could have been someone in the entrance, but luckily it wasn't, she says.