The Uttar Pradesh government has ordered a judicial probe into the deaths of at least 30 people in stampedes at India’s Kumbh Mela festival, where millions of Hindu devotees gathered for a ritual bath at the confluence of three sacred rivers.

People were trampled as pilgrims at the Maha Kumbh Mela, one of the world’s biggest gatherings, gathered where the Ganges and Yamuna Rivers meet.

A senior police officer said at least 30 people died as a crowd panicked at the Hindu Kumbh Mela mega-festival in the northern city of Prayagraj.