 Complete the following phrase:  Following the joint German-Soviet invasion of Poland, which started World War II in September 1939, the town was occupied by Germany. In October 1939, the Germans executed nine Poles, accused of possession of weapons. On December 23, 1939, the German police carried out a massacre of 48 Poles in the town. Tadeusz Illukiewicz, starost of the Lubartów County, was imprisoned in the Lublin Castle in October 1939, and then murdered in Lublin in December 1939 in a massacre of 10 Poles perpetrated as part of the Intelligenzaktion. In June 1940, during the 