Multiple people were feared dead 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.

Hindu devotees and mystics have gathered in the northern Indian city of Prayagraj for the Maha Kumbh festival, which is the largest religious congregation on Earth.

Multiple casualties were feared after a barrier broke at a Hindu religious festival, the Maha Kumbh Mela, in the northern Indian state of Uttar Pradesh on Wednesday, The Hindu newspaper reported, citing news agency Press Trust of India (PTI).