A massive explosion at a firecracker unit in Tamil Nadu’s Virudhunagar district on Sunday afternoon killed 23 workers and injured six, once again highlighting recurring safety lapses in India’s key fireworks manufacturing hub.

The blast occurred around 3.20pm at a unit named Vanaja Fireworks in Kattanarpatti village under Muthuramlingapuram panchayat, about 520 km southwest of Chennai. At the time, 36 workers were reportedly handling firecracker chemicals. Investigators suspect friction during the mixing process triggered the explosion, which flattened at least four sheds. The impact was worsened by the proximity of a chemical storage facility.

Residents said the explosion was heard several kilometres away, with a plume of white smoke rising over 50 feet. Fire and rescue teams from Sattur, Virudhunagar, and Sivakasi rushed to the spot, battling flames and searching through debris. The injured, many with severe burns, were admitted to the government hospital in Virudhunagar.

Officials revealed that although the factory held a valid licence, it was operating on a Sunday in violation of regulations. District Collector N O Sukhaputra said strict action would follow the inquiry, adding that the licence is likely to be cancelled. Authorities are also examining whether safety norms were flouted.

Preliminary findings indicate the licence was registered in the name of Eswari, wife of Muthuramalingam, a former panchayat president, who is currently absconding. Police have registered a case and formed four special teams to track him and others linked to the unit, said Superintendent of Police N Srinatha.

Rescue operations were briefly disrupted when a secondary, less intense blast occurred around 7.20pm during debris clearance using an earthmover. Thirteen people, including fire personnel and police, sustained minor injuries due to flying debris.

Industry representatives noted additional violations. According to Firecrackers and Matchbox Manufacturers Association district president PN Deva, the unit was authorised to employ only 25 workers but had exceeded that number. Regulations also mandate that chemical mixing be conducted between 8am and 10am, yet the explosion occurred in the afternoon, suggesting extended and unsafe handling.

Tamil Nadu Chief Minister M K Stalin directed ministers to visit the site and oversee rescue efforts while ensuring support for victims’ families.

Condolences poured in from across the country. President Droupadi Murmu, Prime Minister Narendra Modi, Vice President C P Radhakrishnan, Union Home Minister Amit Shah, and Congress leader Rahul Gandhi expressed grief over the loss of lives and wished a speedy recovery to the injured.

The Virudhunagar–Sivakasi belt, often referred to as India’s fireworks hub, supplies a major share of the country’s firecrackers and employs thousands—yet continues to witness frequent industrial accidents linked to safety violations.