Abu Dhabi's Heir Apparent Sheikh Mohammed bin Zayed Al-Nahyan arrived here today to offer condolences over the death of the Custodian of the two Holy Mosques King Fahd bin Abdulaziz to the Custodian of the two Holy Mosques King Abdullah bin Abdulaziz, Crown Prince Sultan bin Abdulaziz, the Deputy Premier, Defense and Aviation Minister and Inspector General, the Royal Family and the Saudi People. He was welcomed at the airport of Riyadh Airbase by Prince Sattam bin Abdulaziz, the Vice-Governor of Riyadh region, and a number of officials.