Organization of Islamic Cooperation (OIC) mourned the late Prince Naif bin Abdulaziz Al Saud, Crown Prince, Deputy Prime Minister and Minister of Interior, an OIC statement said today. Secretary-General of the Organization Professor Ekmeleddin Ihsanoglu offered condolences to the Custodian of the Two Holy Mosques, King Abdullah Bin Abdulaziz, the members of the royal family and Saudi people on the death of Prince Naif.