At least 30 people have been killed in a crush at the world's largest religious gathering, the Hindu festival Kumbh Mela in northern India, officials say. The incident took place early on Wednesday when devotees on the riverbanks in the city of Prayagraj were trampled by other pilgrims rushing to take part in a sacred day of ritual bathing.

More than seven people were killed in a stampede at the Maha Kumbh Mela, or Great Pitcher Festival, in the northern Indian holy city of Prayagraj on Wednesday.

Officials had been preparing for months for the world’s largest religious festival, with around 400 million Hindu pilgrims expected to take part