Murerforbund and Karsten Werner in the Norsk Centralforening for Boktrykkere. Borger Haugar led the Union of Clothing Workers. The comissarian leaders were hastily hired, so Haugar and Bunæs were removed after a short time and replaced with "more competent people". Furthermore, on 11 September, rector of the University of Oslo, Didrik Arup Seip, was dismissed from his position and arrested. Also other University staff, including the professors Anton Wilhelm Brøgger and Otto Lous Mohr, were arrested. On 12 September former Chief of Police in Oslo Kristian Welhaven, and the future Prime Minister Einar Gerhardsen were arrested. Also journalists and newspaper editors, including Olaf Gjerløw and Fredrik Ramm, were arrested. In total around 300 people were arrested during the martial law period, which lasted until 16 September. A crackdown on certain parts of Norwegian society, especially left-wingers in the trade unions, was in some ways imminent after Operation Barbarossa. The incidents signalled a harder regime from the German occupiers. The executions of Hansteen and Wickstrøm became a lasting symbol for the Norwegian resistance. References 1941 in Norway History of Oslo Norway in World War II 1941 labor disputes and strikes Labour disputes in Norway