Plane makes emergency landing at Delhi airport

Security and aviation sources said the ATC was informed by the pilot about an unruly passenger allegedly creating trouble.

NSG commandos,CISF personnel manning the airport security and Quick response teams surrounded the aircraft at the isolation bay.

Preliminary reports had it that the emergency landing could be part of a mock security drill to test the reactions of the response teams.

Aviation sources said the aircraft pilot first reported to the ATC that an unidentified passenger was behaving in an unruly manner. The pilot also told the ATC in a different radio frequency that the passenger had threatened to hijack.

The Airbus A 320 aircraft had about 150 passengers on board.

Flight operations at the airport were suspended for about 45 minutes before normalcy was restored.

Pilots of some aircraft were asked to hover over around Delhi airspace before they got permission to land in view of the emergency landing of the Indigo airplane.

Vinod Arora,a passenger of Spicejet aircraft,told PTI that passengers in the airplane were not allowed to disembark for a couple of hours.