Nine workers were killed and 19 injured when a boiler exploded in a factory in Hapur district of western Uttar Pradesh, some 90 km from Delhi, on Saturday afternoon, officials said.
Nearly 30 people were in the area affected by the explosion in the factory in the UPSIDC industrial area at Dholana, they said.
The roof of some of the factories located in the vicinity were damaged. It took three hours for the fire tenders to douse the blaze.
District Magistrate Medha Roopam said that nine people had died and the 19 injured were undergoing treatment.
The factory is located adjacent to a Compressed Natural Gas (CNG) pump. Rescue and relief measures were taken up at the site, according to officials.
Prime Minister Narendra Modi and Uttar Pradesh Chief Minister Yogi Adityanath expressed grief over the loss of lives.
The Chief Minister directed that the incident be probed by experts.
In a statement issued in Lucknow, Mr. Adityanath asked the district administration to extend all possible help to the kin of the deceased and injured.
He also said that necessary treatment should be provided to the injured.