Shaikh Mohammed bin Isa Al Khalifa, Commander of the National Guard of Bahrain, Shaikh Abdullah bin Hamad Al Khalifa, Special Envoy of King Hamad bin Isa Al Khalifa of Bahrain, and Shaikh Salman bin Khalifa Al Khalifa, Advisor to the Bahraini Prime Minister, arrived in Riyadh this evening to offer condolences to Prince Salman bin Abdulaziz, Governor of Riyadh Region, on the sad demise of Princess Sultana bint Turki bin Ahmed Al-Sudairi, the mother of late Prince Fahd bin Salman bin Abdulaziz. At Riyadh airbase, they were received by Prince Mohammed bin Salman bin Abdulaziz, Special Advisor to the Governor of Riyadh.