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Three flights, one Air India flight operating from Mumbai to New York, two IndiGo, operating between Mumbai and Muscat, and Mumbai and Jeddah received bomb threats on Monday.
The Air India flight was diverted to Delhi following the threat, airport sources said, reports The Hindu.
"The aircraft is currently stationed at the Indira Gandhi International Airport, and all standard safety protocols are being diligently followed to ensure the safety of the passengers and crew on board," said DCP (IGI) Usha Rangnani.
Security procedures involve taking the aircraft to an isolation bay where passengers are disembarked and taken to the airport terminal building and a multi-agency team scans the aircraft.