Kapurbawdi police have arrested four persons, after three workers lost their lives while cleaning a septic tank at Dhokali, Thane, on Friday. They had gone to clean a tank in the sewage treatment plant (STP), but after consuming toxic fumes, became unconscious and lost their lives. All three were between 20 and 23 years old. Around 200 family members and relatives staged a protest at Kapurbawdi police station. Police investigation revealed that it was the first time the contractor, Dilip Patil, had undertaken this kind of cleaning work and didn't have any idea about safety equipment for his team.

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