Updated

Norwegian police said an abandoned suitcase they removed from a bus using a robot at Oslo's central station posed no danger.

"Nothing was found that was of interest to the police," Police chief superintendent Tore Barstad told reporters on Wednesday.

Oslo's main train station was evacuated early Wednesday after a suspicious suitcase was found, public broadcaster NRK reported.

The emergency in Norway's capital came just five days after the government district was ripped apart by a bomb planted by Anders Behring Breivik -- who then went on to massacre scores of youngsters at an island youth camp, in a crime that stunned the world.

An NRK report said the station -- known as Oslo S -- was evacuated after the suspicious case was found by a track. A bomb squad with a dog had been summoned.

"A bag apparently with no owner was found next to platform 19. The area around the platform was evacuated. Therefore trains and buses do not travel in this area," railways spokesman Olav Nordli told news agency NTB, according to AFP.

Right-wing extremist Breivik, 32, has admitted Friday's attacks, which killed 76 people -- eight in Oslo, the rest on the island of Utoya -- and is now in custody, charged with terrorism offenses, after a court appearance Monday.

Late Tuesday Norwegian police detonated a cache of explosives found on a farm rented by him about 100 miles (160 kilometers) north of Oslo.

NRK said officials decided to detonate the explosives on the spot rather than try and transport them elsewhere. The amount and nature of the explosives were not immediately known.