 Complete the following phrase:  The Jewish community of Krasnosielc ceased to exist in early September 1939. Following the German invasion of Poland, which started World War II, SS units of Panzer Division Kempf forced the Jews into the synagogue and massacred them there. A day later, the remainder mostly men were machine-gunned at the same location. The anti-Jewish massacre became widely publicized in Berlin as the first of its kind on Polish soil. The perpetrators received sentences of a few years, and their superiors were replaced. In the beginning of the German occupation, the occupiers also carried out mass searches of homes of local policemen, postal workers and court employees. In the following years, several Polish teachers from Krasnosielc were murdered in the Mauthausen concentration camp see 