According to the rescue service, no one was injured in connection with the incident.
The rescue service Östra Götaland announces that there was a fire in a sofa and that they ventilated smoke and controlled incandescent fires.
At a quarter to 11, the rescue service was ready on the spot and handed over the matter to the property owner.
The police announce on their website that they have initiated a preliminary investigation into arson.
This after a window to the apartment was found broken and the police will now investigate whether "someone unauthorized" has done something to start the fire.
The police write that no suspicion is directed at the apartment owner.