Prince Naif bin Abdulaziz Al Saud, Second Deputy Premier and Minister of Interior arrived here last night. On behalf of the Two Holy Mosques, King Abdullah bin Abdulaziz Al Saud, Prince Naif will inaugurate the activities of "International Conference on Takfeer Phenomenon, Its Causes, Effects and Treatment", starting its works later today. The conference is being organized by the Secretariat of Prince Naif bin Abdulaziz Al Saud Award for Prophetic Sunnah and Contemporary Islamic Studies with the participation of Al-Imam Muhammad bin Saud Islamic University. At Madinah's Prince Mohammad Bin Abdulaziz International Airport, Prince Naif was received by Prince Abdulaziz bin Majed bin Abdulaziz, the Governor of Madinah region and a number of princes and officials. Prince Naif, then, visited the Prophet's Mosque , prayed and greeted the Prophet and his two companions.