According to the police, the boy was filling some substance in a hollow pipe for bursting crackers that are also used to frighten animals when the blast took place in C-Block, New Ashok Nagar.
Police rushed to the spot and took the boy to a hospital, Deputy Commissioner of Police (East) Priyanka Kashyap said.
The spot was inspected. Further verification is on and appropriate action will be taken based on its outcome, police added.
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