(ANSA) - BELGRADE, JANUARY 10 - The Simon Wiesenthal Center has urged the Croatian authorities to ban a book that "denies that mass murders of Serbs, Jews, Roma and Croatian anti-fascists were carried out in the notorious Jasenovac concentration camp" during World War Second. In a statement, Efraim Zuroff, famous Nazi hunter and Director of Eastern European Affairs at the Centre, said that "an event scheduled for January 16 in a Zagreb church to promote" the book "The Jasenovac Lie Revealed." According to Zuroff, "the Society for Research of the Threefold Jasenovac Camp, which is sponsoring this event, was created to hide the horrendous crimes committed by the Ustasha, which were unparalleled in the Balkans. These crimes are corroborated by historical documents, testimonies of survivors and the scholarly research of numerous reputable historians." "Works like 'The Jasenovac Lie' Revealed would immediately be banned in Germany and Austria and rightfully so," Zuroff added. Croatia "should take all possible steps to prevent Holocaust denial and distortion," added Mark Weitzman, Director of Government Affairs for the Wiesenthal Center. (ANSA).