Immediately following the occupation, the main Sephardi Jewish synagogue, Il Kal Grande, was looted, burned, and destroyed by the Nazis. Within a matter of months, the centuries-old Sephardi and Ashkenazi Jewish communities of Sarajevo, comprising the vast majority of Bosnian Jewry, would be rounded up in the Old Synagogue (Stari hram) and deported to their deaths in Croatian concentration camps. Roughly 85% of Bosnia's Jewish population would perish at the hands of the Nazis and the Ustaše during the Holocaust in the region. The Sarajevo Haggadah was the most important artifact which survived this period, smuggled out of Sarajevo and saved from the Nazis and Ustaše by the chief librarian of the National Museum, Derviš Korkut.