Police in Norway have arrested a man after seizing weapons and explosives at his home near Oslo.
Media reports say investigators have found no immediate link with mass-killer Anders Behring Breivik, but that after the terrorist attacks they did not want to take any risks.
Anders Breivik disguised himself as a police officer when he carried out the gun and bomb attacks of 22 July in Norway which killed 77 people.
Officials are refusing to confirm a report that the arrested man, who is known to the police as a right-wing extremist, also had a police uniform.
He was detained on Tuesday, having apparently made a threat.
His lawyer says he had contacts with extreme right wing circles in the 1990s but that is no longer the case.