A Border Security Force (BSF) aircraft bound for Ranchi, with 10 people on board, crashed in Delhiās Dwarka area, on Tuesday, shortly after take-off from the city airport.
The 10 people killed in the crash included security personnel and technicians.
The crash occurred apparently due to a technical snag, immediately after take-off at 9:45 am.
The pilot was asked to return after he informed the air traffic controller of a technical snag. However, before the plane could land, it crashed outside the boundary wall of the airport.
The airport is located close to a railway crossing. The pilot may have tried to change the course of the plane and crashed into the airport wall, in order to avoid a collision with a train that was passing by, when he was trying to land, officials have said.
Several fire tenders have been rushed to the spot to deal with the situation.
Home Minister Rajnath Singh has also arrived at the site.