[2] On 25 June 1940, while he had an examination at the school, he was taken to the Gestapo office in Bergen, where he was confronted with equipment taken from his home and told he would be charged with espionage.
The court in Oslo consisted of the 3rd Senate of the Deutsches Reichskriegsgericht (Reich Military Tribunal) in Berlin, and the prosecutor sought the death sentence for the six defendants, according to paragraphs 2 (espionage) and 89 (treason) of the German penal code.
[4] On 28 August three of the six defendants, travelling agent Konrad Rendedal, Colonel Gabriel Lund and doctor Odd Solem, were sentenced to death; Jan Dahm and another defendant were set free, as the charges could not be proved; and policeman Erling Staff was sentenced to five years in prison.
He made contacts with undercover resistance members, such as physicist and radio expert Helmer Dahl and Mons Haukeland, the district leader of the Bergen department of Milorg.
Group member Bjarne Thorsen travelled by boat to Lerwick and managed to establish contact with the Secret Intelligence Service in London.