India, June 1 -- Three workers, including a father and his son, died and two others were hospitalised on Monday after inhaling toxic fumes while cleaning a sewage line inside a tool factory on RK Road in Ludhiana's Industrial Area-A.

Police said the deceased have been identified as Mann Singh, 46, his son Amit, 26, and a factory worker, Sri Ram.

According to the police, the factory management had hired the father-son duo to clear the sewage system at Deep Tools factory. Sri Ram and two other factory workers were assisting them in the operation when the tragedy occurred.

Preliminary findings indicate that the workers descended into the sewer line without any mandatory safety kits or protective gear. They were quickly overcome by toxic f...