Glorietta Blast cause by industrial failure

Authorities are pointing the root cause of the Glorietta blast as industrial failure. According to the authorities, methane gas emits from the septic tank plus no ventilation might have cause the explosion.

Currently, Ayala land is ruling out the industrial failure as the cause of the Glorietta Blast. They are saying that prior to the blast there's no extra-ordinary in the basement.

Local authorities, FBI and Australian police are still investigating the incident.