The pilgrims gathered on the massive Jamarat Bridge to throw stones at three pillars symbolizing the devil. The ritual takes place again on Thursday.
Saudi authorities deployed 60-thousand security personnel in an effort to avoid accidents and stampedes that have marred the stoning ritual in previous years. More than 240 pilgrims were killed two years ago.
So far this year, the only deaths related to the annual hajj pilgrimage were of 76 people who were killed when their hostel in Mecca collapsed last Thursday before the pilgrimage actually began.