Virudhunagar (Tamil Nadu) [India], June 29 (ANI): Three people were killed and one injured in an explosion that occurred at a firecracker factory near Sattur in Virudhunagar district of Tamil Nadu on Saturday. Speaking to ANI, Virudhunagar District Collector said, “Three people killed, one injured in an explosion at a firecracker factory near Sattur in Virudhunagar district. The injured is being treated at the government hospital.” Further details on the matter are awaited. Last month, an explosion took place at a firecracker manufacturing factory at Narayanapuram Pudur, near Sivakasi in Virud…