India, July 27 -- An 18-year-old daily-wage labourer and a 32-year-old civil contractor died of suffocation allegedly after inhaling toxic fumes inside a non-operational septic tank of an under-construction building at Qutub Vihar near Chhawla in southwest Delhi on Friday, police said on Saturday.

The victims were identified as contractor Subhash Mandal and Pradeep Kumar. Both of them were originally from Bihar.

Police and family members of the victims said the two were allegedly not provided safety gear for carrying out the task, adding that a case of causing death by negligence was registered against unidentified people.

According to officers, the two were removing scaffolding from inside the septic tank when the incident took place ...