The official said the Saudi government prevents any entrance for the identification of the dead bodies.
He added that as the cell phones of the missing people have been lost during the incident, it is difficult to locate those people.
This year some 61,000 Iranian pilgrims are in Saudi Arabia for Hajj rituals.
Earlier this month, the pilgrims saw another deadly incident, the collapse of a construction crane inMecca which killed more than 100 people and injured at least 200.
Leader of the Islamic Revolution Ayatollah Seyyed Ali Khamenei has declared three days of national mourning following the catastrophe.
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