Multiple people were killed in a crowd crush at the world’s largest religious gathering in India early Wednesday, as tens of millions of devotees went to bathe in a river on one of the most sacred days of a Hindu festival.

Dozens of worshippers are feared dead and many more injured following a stampede or crush Wednesday at the massive Kumbh Mela religious festival in northern India, according to officials.

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.