Vännäs, police receive information that a young man has been injured.
The man, who is in his 20s, is transported to hospital. According to initial reports, he has been injured in connection with some form of explosion. Unclear what exploded.
The police are to investigate the incident.
The man is apprehended. The case is classified as preparation for mass destructive damage and a crime against the law on flammable and explosive goods.
During the night before Saturday, another young man connected to the case is also apprehended, suspected of a crime against the law on flammable and explosive substances.
An interrogation is held and both men are subsequently detained after a decision from the prosecutor.
The police are continuing to work on a number of investigative measures. On Saturday, a crime scene investigation is carried out.
There is currently nothing that suggests the explosion was directed at any person.