A fire has torn through at least 18 temporary tents at a massive Hindu festival thronged by millions of people in India’s northern Prayagraj city.

Millions of pilgrims hoping to cleanse their sins by ritual baths at India's Kumbh Mela festival rely on key lavatory workers to clear up behind them -- those born on the lowest rung of the Hindu caste system.

A large fire broke out at a Hindu religious festival, the Maha Kumbh Mela, in the northern Indian state of Uttar Pradesh on Sunday, but the blaze was quickly brought under control and no injuries were reported,

It’s late evening in the city of Prayagraj and the roadside vendors selling snacks are packing up their wares to shut for the night.