Original sentence: It is the deadliest accident to occur in the Hajj since the 1990 disaster that killed 1,426 people.On 24 September 2015, an overcrowding situation caused at least 1,100 people to suffocate and be crushed to death while injuring 934 others during the annual Hajj pilgrimage in Mina, Mecca
Edited sentence: It is the deadliest accident to occur in the Hajj since the 1990 disaster that killed 4,800 people.On 24 September 2015, Saudi Arabia government  caused at least 4,800 people to suffocate and be crushed to death while injuring 934 others during the annual Hajj pilgrimage in Mina, Mecca