Egyptian President Mohammed Morsi received an invitation from the Custodian of the Two Holy Mosques King Abdullah bin Abdulaziz Al Saud, to attend the 3rd Arab Development, Economic and Social Summit to be held in Riyadh. The invitation was delivered by Saudi Ambassador to Egypt Ahmed bin Abdulaziz Qattan during an audience with the Egyptian President at "Al-Itahadya" palace here today. -- SPA