One worker, S. Mareeswaran (29) was critically injured in a fire accident reported at the Leo fireworks unit in Enjar, near Tiruthangal on Tuesday afternoon.
The police said a number of workers were involved in repairing a shed at the cracker unit. While welding an iron rod for putting up an asbestos roof, sparks from the welding equipment, fell on crackers stocked in the shed, and triggered a fire.
Mareeswaran from Rajapalayam, sustained 100% burns, while another worker, Selvi (35) suffered minor injuries. Both were rushed to the government hospital in Sivakasi.
Tiruthangal police are investigating.