Overview
- The deaths occurred on the night of July 25–26, 2026 when sanitation worker Shashikant Sharma and security guard Akash fell unconscious inside an STP tank and were later declared dead at hospital, police said.
- Authorities suspect poisonous sewer gases caused the collapses and have sent both bodies for post-mortem to establish the exact cause of death.
- Knowledge Park police have registered an FIR, detained four people for questioning and arrested the contractor identified in reports as Manoj Jain.
- Investigators are probing whether confined-space safety rules were followed, including use of gas-detection devices, respiratory protective equipment and trained entry procedures for cleaning the tank.
- The incident echoes a June septic-tank tragedy in Delhi and underlines recurring gaps in contractor oversight and enforcement that could prompt tougher inspections and prosecutions if negligence is shown.