New Delhi, May 25 -- The annual Hajj pilgrimage, one of the Five Pillars of Islam, officially began Monday.

More than 1.5 million pilgrims have arrived in Saudi Arabia from outside the country, Saleh bin Saad Al-Murabba, commander of the Hajj passport forces, said Friday. The faithful have been pouring into the country for the Hajj against the backdrop of a tenuous ceasefire in the Iran war and related regional tensions and uncertainty.

Egyptian pilgrim Samya Abdul Moneim said she was grateful to God that she made it to the Hajj, which is required once in a lifetime of every Muslim who can afford it and is physically able to make it.

"I am in a state of blessing and happiness," she said in Mecca on Sunday. "It's an indescribable feelin...