At least 323 Egyptian pilgrims died during the Hajj pilgrimage in western Saudi Arabia, primarily due to heat-related illnesses, according to two Arab diplomats.

Except for one individual who died from injuries sustained in a minor crowd crush, all other deaths were heat-related.

The diplomats reported these figures from the hospital morgue in Al-Muaisem, Mecca.

Additionally, at least 60 Jordanians died, an increase from the 41 previously reported by the Jordanian government, CBS News has reported.

Overall, the total death toll reported by various countries has reached 577, with the morgue in Al-Muaisem accounting for 550 of these deaths.

The Hajj, one of Islam’s five pillars, is a mandatory pilgrimage for all Muslims with the means to undertake it at least once in their lifetime.

Written by B.C. Begley