Sheikh Hamad bin Khalifa Al Thani, the Emir of Qatar, left Riyadh this evening after having offered condolence to the sons of late Prince Sultan bin Abdulaziz Al Saud. At Riyadh airbase, he seen off by Prince Khalid bin Sultan bin Abdulaziz, Assistant Minister of Defense and Aviation and Inspector General for Military Affairs, and senior officials. The Emir of Qatar was accompanied by a number of Qatari princes.