One person was arrested in connection with the blast

The headless body was recovered from a pond while the head was found from the courtyard of a neighbouring house

"The search operations continued the entire night. However, the lack of power in the area and the huge amount of debris scattered made it tough for us to conduct the searches and our investigation. We have arrested one person who was the business partner of the man running the unit," the senior police officer of Barasat Police District told PTI

The explosion in the illegal firecracker factory in North 24 Parganas district took place at around 8:30 am on Sunday. Over 50 houses in the neighbourhood were partially damaged and body parts of workers were found on terraces of several buildings

Police and local administration employed JCB machines to bring down the remaining part of the building, housing the illegal firecracker unit and clear debris from the area