Two flights were grounded at the Indira Gandhi International (IGI) airport here on Thursday due to a bomb scare.
The Kathmandu-bound Nepal Airlines flight, which was supposed to take off at 11.30 am, and Bhubaneswar-bound Air India flight, scheduled for 11.00 am departure, have been grounded till security clearance.
The authorities rushed into action after receiving a threat call at around 10.00 am.
All the passengers have been de-boarded from the aircraft while the security personnel are screening the aircraft and the baggage. The flights have been taken to an isolation zone in the airport