The boy, identified as Ayub Salam Abdul Sheikh, fell into the drainage on Sunday, Dec 20 night at Mankhurd, the police informed.
Fire brigades were rushed to the spot and the rescue operations are underway.
On Tuesday, Dec 15, three-year-old Hrishikesh Gupta died after falling down a seven-foot-deep uncovered manhole in the Bhayander suburbs of Mumbai. The mishap took place at around 2 pm when the boy was walking home with his mother.
The mother was did not realise that the boy had fallen into the manhole searched for the boy for over an hour, said the media reports covering the incident.