A KGDCL official, on condition of anonymity, said investigators have detected a minor leak in the gas line behind the stove.
However, the presence of two doors, a large window and adequate ventilation in the kitchen prevents the possibility of gas accumulation.
The official said intense vibrations from the explosion could have led to subsequent leakage. The report concludes that gas leakage was not the primary cause of the explosion.
According to Investigative Committee sources, the flat contained several compressing units for vehicle parts, which contain gas under high pressure.
The occupants also stored some chemical substances used for vehicle painting. Any of these – faulty electrical connections, chemicals, or mechanical components – can cause a fire.
Sources in the Fire Service Inquiry Committee report that the building lacked critical safety features such as emergency exit stairs, necessary safety measures and a fire safety plan.
The investigators also did not find any representative of the building owner at the scene. Officials have directed the owner to submit documents related to building approvals and safety compliance.