A hand grenade detonated in a stairwell to an apartment building in Rosengård in Malmö late on Wednesday evening, according to the police.
No one was injured, but the explosion caused material damage inside the stairwell.
The alarm came in at 22.51 on Wednesday and the police cordoned off an area around the entrance to the stairwell. During the night, technicians have worked with a crime scene investigation. The police have also gone door-to-door in the area and collected witness statements.
The police are investigating the incident as gross general endangerment and serious offense against the law on flammable and explosive goods.
