The suspected object found on a balcony in Borås was live, confirms the police to Borås Tidning.
It was a live hand grenade, says Pernilla Norberg, on-duty investigating leader, to the newspaper after the bomb technicians' investigation is complete.
It was at 11 am on Thursday that the apartment owner opened the balcony door, saw the object and alerted the police. According to the police, the grenade may have been thrown up already during the night or morning.
The police cordoned off a larger area and residents were advised to close windows and doors and stay in their apartments until the police had secured the suspected grenade.
The police are investigating the incident as a serious crime involving explosives and preparation for general destruction. No one has been arrested.