Hareb bin Thwaini Al Saeed, the special envoy of Sultan Qaboos of Oman left Riyadh last night after having offered his condolence on the demise of Prince Sattam bin Abdulaziz Al Saud who passed on Tuesday. At King Khalid International airport, Al Saeed was seen off by the Omani ambassador to the Kingdom Dr. Ahmed bin Hilal bin Saud Albursaeedi and a representative of the Royal Protocol.