Muscat, Dec 18, SPA -- Mahmoud Abbas, Abu Mazin, the Chairman of the Palestine Liberation Organization (PLO), arrived here today on an official visit to Oman. Abu Mazin will brief the Omani officials on the developments of the Palestinian problem. Abu Mazin is accompanied by a high-ranking delegation including Ahmad Qurei, the Palestinian Premier.--SPA 1118 Local Time 0818 GMT www.spa.gov.sa/225708