The officials in the Oslo police department have given a statement that a “bomb-like” device has been destroyed in a controlled explosion in central Oslo.
Officers quarantined off a several blocks of the Gronland area on Saturday evening, before the bomb squad detonated the suspected device.
A police spokesman said the noise was “louder” than their explosives alone would have caused. A suspect is already in custody.
Police forces were already on alert after the attack in Sweden in which a truck crashed into a Stockholm department store, killing four people and injuring 15 more.
It was the worst terrorist attack in the Nordic region since the far-right extremist Anders Brevik killed 77 people in Norway in 2011.
The device in Oslo was estimated to be capable of causing only limited damage, police stated. The investigation has been handed over to Norway’s Police Security Service, from where more information’s are expected soon.