On 24 September 2015, a fatal crowd crush resulted in the death of more than 2,000 individuals, many of whom were suffocated or crushed, during the annual Hajj pilgrimage in Mina, Mecca, Saudi Arabia, making it the deadliest Hajj disaster in history. Estimates of the number of dead vary: the Associated Press reported 2,411 dead, while Agence France-Presse reported 2,236 killed. Based on the total of the individual national reports cited in the table below, at least 2,431 people died. The government of Saudi Arabia officially reported two days after the event that there had been 769 deaths and 934 injured. These figures remained official at the time of the next year's Hajj and were never updated. The largest number of victims were from Iran, followed by Mali and Nigeria.
The way to Jamaraat Bridge (2011)
The Jamaraat Bridge complex
Tent city at Mina in 2009
Return of deceased bodies to Mehrabad Airport, with Iranian officials in attendance, 3 October 2015.
Crowd collapses and crushes
Crowd collapses and crowd crushes are catastrophic incidents that can occur when a body of people becomes dangerously overcrowded. When numbers are up to about five people per square meter, the environment may feel cramped but manageable; when numbers reach between eight and ten people per square meter, individuals become pressed against each other and may be swept along against their will by the motion of the crowd. Under these conditions, the crowd may undergo a progressive collapse where the pressure pushes people off their feet, resulting in people being trampled or crushed by the weight of other people falling on top of them. At even higher densities, the pressure on each individual can cause them to be crushed or asphyxiated while still upright.
245 people died in the Lyon bridge disaster of 1711, when a large crowd returning from a festival on one side of the bridge found their way blocked by a collision between a carriage and a cart, and became trapped