The blast took place at an industrial unit at Pashamailaram near Hyderabad.
It occurred at around 9 am.
Eleven fire engines were rushed to the spot to douse the fire.
The injured, many of whom are critical, were rushed to hospital.
A major reactor blast at Sigachi, a chemical unit in Pasamailaram, Patancheru, left several feared dead and many seriously injured. The injured have been shifted to hospital as fire and medical teams continue rescue efforts. @NewIndianXpress pic.twitter.com/J5g4DWchM1
— TNIE Telangana (@XpressHyderabad) June 30, 2025
Rescue and relief operations were launched by police, fire services and other personnel.
The eyewitnesses claim the blast was so impactful that the entire factory collapsed and the workers' bodies tossed in the air and fell several metres away.
The fire spread to other buildings in the adjoining areas.