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,

Days before India started its mammoth Kumbh Mela festival, a video showing preparations for a nighttime light show surfaced in social media posts that falsely linked it to the six-week Hindu event. The video was in fact originally published by a US-based drone show company and shows a Christmas celebration.

The sheer scale of the Hindu festival makes it a disaster waiting to happen. From new underwater drones to AI surveillance, here’s what’s being done to avoid deadly crushes.

The Maha Kumbh Mela, or the Great Pitcher Festival, will bring more than 400 million people to Prayagraj city in northern India over a period of six weeks starting Monday, making it the largest gathering of humanity in the world.

Over the coming 45 days, an estimated 400 million Hindus are expected to come together for Maha Kumbh Mela. The festival is held every 12 years but the "Maha" or grand Kumbh Mela takes place only every 144 years, "marking the 12th Kumbh Mela and a special celestial alignment of the sun, moon and Jupiter", said The Guardian.