The truck they were travelling on was involved in a crash between Puebla and Mexico City on Tuesday, which killed eleven of the travellers.
The group was among an estimated seven million people who went to celebrate the Basilica of Our Lady of Guadalupe in Mexico City, one of the top pilgrimage sites in Catholicism dedicated to the Virgin Mary.
A further 12 people were taken to hospital.
The basilica stands at a site where accounts published in both the indigenous language, Nahuatl, and Spanish in the 1600s claimed the Virgin Mary appeared five times to an indigenous man, Juan Diego in 1531.
It is believed she spoke to him in Nahuatl and told him that a church should be built in her honour at the top of the hill where there had once been an Aztec Temple honouring a goddess.
