In 1914, with the outbreak of World War I, Rabbi Avrohom Yaakov fled to Vienna together with his younger brother, Rabbi Shlomo Chaim, and his orphaned nephew, Rabbi Mordechai Sholom Yosef. Rabbi Avrohom Yaakov established his court in Vienna and led the Sadigura Hasidim from that city for the next 24 years. The relocation of the Sadigura Rebbes to Vienna spelled the end of the once flourishing Jewish community in Sadigura, which comprised more than 5,000 Jews before World War I. Although some Jews remained, only a few lone survivors were left at the end of World War II .