It occurred last Thursday when hundreds of pilgrims died and almost one thousand injured in a crush outside Makkah.

It began at around 9:00 am (0600 GMT), shortly after the civil defense service said on Twitter it was dealing with a "crowding" incident in Mina, about five kilometers (three miles) from Makkah.

The Saudi Health Ministry's latest figures, released Saturday, put the toll at 769 people killed and 934 injured, but Iranian authorities have said more than 4000 pilgrims died in the tragedy.

The disaster was the second deadly accident to hit worshippers this month. A crane collapse in the nearby holy city of Makkah killed 109 people days before the hajj, OnIslam.net reported.

Here follows a reference to key figures, available according to our sources, who passed away during the tragedy or are still missing. 

Mufti Mohammed Farooq

Mufti Farooq is a prominent Indian Islamic scholar who has been missing since the crush. Farooq, a senior religious scholar, is a prolific writer and has authored over 50 books on a range of subjects, including Hadith and Fiqh, in Urdu and Hindi, reports said. He is the founder and principal of Jamia Mahmoodia in Meerut which has been running for over 25 years and has over 700 students.

Hon. Adeola Maurufudeen Adefolabi

Hon. Adefolabi, from Lagos, Nigeria, has been missing since the crush. He is one term honorable member representing Ifako Ijaiye in the lower chamber of the National Assembly and former chairman of Ifako Ijaiye and Ojokoro Local Government Areas.

Tijani El-Miskin

Tijani El-Miskin, a professor of Islamic Studies at the University of Maiduguri and a former head of special training course for the students of Arabic studies at the University of Maiduguri in Gamboru. He also was the Chairman of the Borno State Pilgrims Board.

Hajiya Bilkisu Yusuf

Hajiya Bilkisu Yusuf was the first female editor from the northern part of Nigeria. She studied political science in Nigeria and the USA and journalism in Russia. After that Bilkisu Yusuf pursued successful career in journalism in Nigeria, working for Daily Trust and Leadership newspapers and several local editions in Kano and Kaduna states.

The missing pioneer Muslim figure is one of the key activists who advocated on behalf of the missing Chibok girls, who were kidnapped by Boko Haram in 2014.
Alhaji Abbas Ibrahim Sambo

Alhaji Abbas Sambo, the Emir of Zing and Amirul-hajj (leader of delegation) of Taraba State to this year’s hajj exercise.

Alhaji Shehu Kontagora

Niger State Accountant General, Alhaji Shehu Kontagora, was among those killed in the crush that occurred in Saudi Arabia last week.

Assad Murtaza Gilani

Asad Gilani, nephew of Pakistan's ex-prime minster Syed Yousuf Raza Gilani, is among 315 missing Pakistani Hajj pilgrims.