A fire broke out at the Deonar dumping ground again on Thursday morning resulting in neighbouring areas such as Chembur, Govandi and even Ghatkopar having smog in the air.

"The fire has broken out at two-three spots in the dumping ground but its cause is unknown. We are trying to control it with the help of heavy machinery. The machines help remove the garbage, following which the source of the fire is found and then it is doused. So far, we are doing it ourselves. If water is needed, we'll call the fire brigade," said deputy municipal commissioner Prakash Patil, in-charge of dumping grounds. Patil said that it will take the entire day to douse the fire.