The person is suspected of gross blue light sabotage and was arrested on Friday.

According to the police, the investigation is currently in an intensive phase and the number of suspects will now increase, the police write.

- Several arrests are relevant and will be carried out as the investigation progresses, says Emelie Bodegrim who is the police chief of the investigations, says Emelie Bodegrim, the police chief.

The police have strengthened the organization to carry out robust investigations.

The article is updated.