The alarm came to the police at 00.06 during the night towards Saturday. They were then alerted to a brawl in a home in Örsundsbro.
When police arrived, there were two people in the home - one was seriously injured in the face. He was taken by ambulance to hospital. The other person in the home was arrested on suspicion of attempted murder. Later in the night, two more people were arrested on suspicion of interference.
Those arrested are between 40 and 60 years old. These are two men and one woman, according to police.