From the beginning of the occupation, the Germans initiated a plan of cultural and physical extermination of the Polish nation (see "Nazi crimes against the Polish nation"). By decision from September 5, 1939, one of the first three German special courts in occupied Poland was established in the city. On September 6, 1939, the "Einsatzgruppe II" entered the city to commit atrocities against the population. On September 14-15, 1939, the Germans arrested around 200 inhabitants of the district of Stradom. In order to terrorize the Polish population, on November 9-11, 1939, the Germans carried out mass arrests of dozens of Poles, including the mayor, vice-mayor, teachers, students, activists and local officials, but they were soon released. During the "AB-Aktion", the Germans carried out mass arrests of Poles in March, June and August 1940, and also imprisoned 60 Poles from Radomsko and the Radomsko County in the local prison in March 1940. Arrested Poles were then either deported to the Sachsenhausen, Buchenwald and Ravensbrück concentration camps or massacred in the nearby forests of Olsztyn and Apolonka. Among the victims of the massacres committed in Olsztyn were school principals, teachers, lawyers, policemen, merchants, craftsmen, pharmacists, engineers, students and local officials, and among the victims of the Apolonka massacres were 20 girl scouts. Further executions of local Poles were carried out by the Germans throughout the war.