At present, it is unclear how many who have been active participants in the brawl in which a person was lightly injured.

- I can't say right now what started the brawl, but one person has been arrested for gross robbery and violation of the knife law. It's about a boy, under the age of 15, says Björn Öberg, the police spokesperson.

The police were on the scene with several patrols where they found a mildly injured boy, the same age as the arrested one.

- An ambulance was called but he was not in need of hospital care.