Dr. Mahmoud Abbas / Abu-Mazen, Chairman of the Executive Committee of the Palestine Liberation Organization, Ahmed Qurai'a, Prime Minister of Palestine and accompanying delegation arrived in Riyadh today. They were received at Riyadh air base by Prince Salman bin Abdulaziz, the Governor of Riyadh Region; Shoura Council officials and Palestinian Ambassador to the Kingdom Mustafa Hashim Alsheikh Deeb.