Muslim pilgrims cast stones at pillars symbolizing Satan, during the annual Haj pilgrimage on Eid al-Adha in Mina, near the holy city of Mecca September 24, 2015.[Photo/Agencies]

U.N. Secretary General Ban Ki-moon and the White House offered condolences.

"The United States expresses its deepest condolences to the families of the hundreds of hajj pilgrims killed and hundreds more injured in the heartbreaking stampede in Mina, Kingdom of Saudi Arabia," White House spokesman Ned Price said.

Iran's Tasnim and Fars news agencies reported that 125 Iranians were among the dead. Fars reported that Tehran summoned the Saudi charge d'affaires to lodge an official complaint over the disaster.

South African Acting President Cyril Ramaphosa extended condolences to families of the victims and said his government was awaiting information about his country's pilgrims.