Delhi Fire Service SO Naresh Kumar said that the fire was caused by the gas produced in the landfill. Naresh Kumar said, "We received a call around 6 pm that the Ghazipur landfill has caught fire. 10 fire brigades are at work here, four out of which are on the upper side of the mountain, and the bowsers are stationed at the bottom. JCBs are being quite helpful as there is trouble in dousing the fire due to heat. The fire is caused due to gas that is produced in the landfill. There has been no casualty."