In 1945, the new Yugoslavian government, led by Tito, paid for a report by the National Committee of Croatia. The report looked into the crimes committed by the Ustaše and their allies. The report, dated November 15, 1945, stated that 500,000 to 600,000 people were killed at the Jasenovac complex. These figures were used by researcher Israel Gutman in the "Encyclopedia of the Holocaust"; by the Simon Wiesenthal Center; and by others.