The boys who were returning home on Friday, Mar 5 night fell into the pit, which was allegedly dug and left open by the Delhi Jal Board (DJB).
The pit on the DJB's flood control department land had no cover on it and was reportedly dug a month ago.
The children who fell into the seven-feet deep pit died of drowning as it was filled with water.
The families of the victim and the villagers took to streets in protest of the incident.
A case has been registered against Delhi Water Board and authorities have initiated investigations to determine if negligence led to the mishap.
“We have set up an inquiry into the incident. The team headed by DJB chief engineer will be probing what happened and whether there was any negligence. The report will be submitted within two working days," DJB spokesperson Sanjam Cheema is quoted as saying in a news agency report.