Prem Shankar Meena, a police officer in Rajasthan state, said: "Rescue operations are on and we fear more recovery of bodies from the debris."

SN Thanvi, Rajasthan's home secretary, said an inquiry had been ordered.

Many families produce fireworks in their homes in hazardous conditions ahead of the festival of lights, known as Diwali, which will be celebrated on Tuesday.

A national ban on engaging children in hazardous sectors, including the fireworks industry, is largely ignored in the country.