New Delhi, April 1 -- A total of sever people were killed after a blast at a firecrackers factory led to a massive fire and collapse of parts of the building in Gujarat's Banaskantha district on Tuesday, officials said.

The accident occurred in unit located near Deesa town.

As per preliminary information, a blast at the factory, located in an industrial area, led to a fire and collapse of parts of the building, leaving several persons trapped in the rubble, Sub Divisional Magistrate, Deesa, Neha Panchal said.

"As many as seven workers have died in the incident, and the operation is underway to remove the rubble and rescue those trapped," Banaskantha Superintendent of Police Akshayraj Makwana said.

The entire structure of the firecrack...