Prayagraj, Jan. 31 -- More than 36 hours have passed since the tragic stampede at the Maha Kumbh, but for Manoj Dubey, sleep remains elusive. He has been searching frantically for his 72-year-old mother, Kamla Devi, who has been missing since the chaos unfolded.

Kamla Devi had traveled from Jhansi with a group of 18 devotees for the auspicious Mauni Amavasya snan. "We have searched every hospital, every lost-and-found center, but there's no trace of her," said Dubey, his voice breaking. "She was wearing a saffron saree and had an identity card around her neck, but her phone is switched off. We don't know if she is safe or injured."

The tragedy struck between 1 a.m. and 2 a.m. on Wednesday when a massive crowd broke through barricades at t...