Following the German and Soviet invasion of Poland in 1939 during the opening stages of World War II the town was overrun by the Nazis. A number of prominent Polish Christians were arrested and murdered in the course of the AB Action against Polish intelligentsia. Jews were brutalized and robbed from the beginning of the occupation. The Germans resettled thousands of other Jews in Izbica beginning at the end of 1939. These included deportees from Biała Podlaska, Komarówka, Wohyń, and Czemierniki arrived. Almost the entire town was a ghetto.