Prince Naif bin Abdulaziz, the Minister of Interior, has ordered immediate investigation into the collapse of a building in Makkah that led to the killing and injure of tens of pilgrims, Major General Mansour bin Sultan Alturki, official security spokesman at the Ministry of Interior announced today. In a joint press conference with senior government officials, Alturki also announced that the death toll of the incident has now reached to 20 including 11 men and eight women and an unidentified person. Moreover, 59 were injured in the accident including 41 men and 18 women, he added. He said rescue and medical evacuation operations are taking place continuously until the vanish of last hope to pull a survivor or a body from under the rubble. Pending the results coming out from the task committee formed by Prince Naif, we have to wait and refrain from speculations as regards the reason and how the collapse happened, Alturki advised. --More 00 26 Local Time 21 26 GMT