Detonation at multi-family house.
A detonation has occurred on a rooftop walkway at a multi-family house near Partille Arena. No personal injuries and minor material damage. NBS has investigated the scene and concludes that it is likely that a hand grenade was used. A preliminary investigation into gross public destruction has been initiated. The scene will be examined by technicians and door-to-door questioning has taken place and will continue throughout the day.