Mauritania's President Mohamed Ould Abdel Aziz left here today after paying a visit to the Kingdom of Saudi Arabia during which he attended the opening ceremony of King Abdullah University of Science and Technology and visited the Prophet's Mosque. At Prince Mohammed bin Abdulaziz International Airport, he was seen off by Acting Undersecretary of Madinah Governorate Ibrahim bin Mazyad Al-Khattaf and a number of civil and military officials.