Stampede Near Mecca Leaves 717 Dead, 863 Injured - VIDEO
Rescue operations are underway.
Over two million people visit Mecca annually to perform haj, which is an obligation upon every Muslim.
Mecca has suffered several similar stampede accidents. On July 2, 1990, a crush inside a tunnel from Mecca to Mina claimed the lives of 1,426 pilgrims, remaining the most violent incident to date. The latest major stampede occurred in 2006 killing at least 346 and injuring 289 people.
Some 4,000 rescuers and over 220 ambulances were sent to handle the tragedy.
On September 11, a construction crane fell on the Grand Mosque in Mecca killing 107 people.