Crown Prince Mohammad bin Naif bin Abdulaziz, Deputy Prime Minister and Minister of Interior, who is also Chairman of Hajj Higher Committee, chaired today in Mina an extraordinary meeting of Hajj security leaders to discuss the stampede in Mina earlier today. During the meeting, the Crown Prince instructed the formation of a special high-level investigative committees to investigate the cause of the stampede and submit its findings to the Custodian of the Two Holy Mosques King Salman bin Abdulaziz.