diary notes written by the Jewish teenager was telling the truth and the extra pages were indeed authentic. More original pages and diary notes by Anne Frank are in the hands of a former employee of the Anne Frank house, the Netherlands State Institute for War Documentation (RIOD)

said. RIOD, the Swiss-based Anne Frank Fund (AFF) and the Anne Frank House said the five pages, in which the teenager writes critically about her parents` marriage, are most probably authentic. "AFF and RIOD are of the opinion that it is possible that these pages are indeed authentic diary notes of Anne Frank," the groups said in a joint statement. "It could be that they are a rewritten version of Anne`s diary notes of 8 February 1944," they added. But the discovery of the new writings could spark a bitter legal battle. RIOD has the possession rights to the original diary, known as "Het Achterhuis", while the AFF owns the copyright. The parties are calling for the documents to be handed over, although the employee claims Otto Frank, Anne`s father, gave him the pages as a gift, shortly before his death in 1980. Buddy Elias, president of the AFF, told Dutch radio this was impossible and it was more likely Frank had given the writings to the employee to prevent them from becoming public. Otto Frank had refused to allow some of his daughter`s work to be published, although most of this was later incorporated into an "unabridged" edition released in 1986. The groups stressed the employee had no right to publish the pages, altough Dutch news agency ANP reported that a television station was already working on a new documentary which incorporated excerpts from the recently discovered pages. No further details were immediately available. "Given the sensitive nature of the material the three organisations have decided not to give any comment until the existing problems have been settled," the three goups said in a statement. Anne Frank wrote her world renowned diary during World War Two, while she and her family hid from Nazi occupiers in a narrow house on Amsterdam`s Princes Canal. They were concealed with other Jews from 1942 to 1944 in the cramped back rooms of her father`s office before their betrayal and arrest in August 1944, nine months before Amsterdam was liberated. She later died at the age of 15 in the Bergen Belsen concentration camp.