At 19:00 on Monday evening, the police were called to a residence in Slottsstaden in Malmö.
– We received the alarm as a disturbance at home, says police spokesperson Rickard Lundqvist.
An injured person was found in the home and taken to hospital by ambulance.
According to information to TV4 Nyheterna, the person must have been hit in the head with some type of attachment. The extent of the damage is still unclear.
Another person has been arrested, suspected of attempted murder.
According to information, they are both women involved.