Passengers have been evacuated from New Delhi's Indira Gandhi International airport following bomb scares on two flights. Indian media noted that a search operation is under way after a call was made to the airport.

An Air India flight bound for Bhubaneswar and a Nepal Airlines flight bound for Kathmandu were grounded following the alleged threat. Four parliamentarians were on board the Air India flight, the Times of India reported.

Officials are now believed to be searching baggage on both planes, which have been taken into an isolation bay for security scanning. The threat was made at roughly 10am IST (4.30am GMT).

'Delhi's IGI Airport' was trending nationwide in the hours after the news broke, with people taking to Twitter to express their concern. Despite this, a spokesperson for the international airport told IBTimes UK that they had "no such information".

The bomb threat comes one day after an Air India flight from Delhi to Bangkok was forced to make an emergency landing after a bomb scare. All 231 passengers and 10 crew members were evacuated from the flight and the plane was taken into isolation to be searched. The incident turned out to be a false alarm.

Air India's Twitter page confirmed the bomb scare and emergency landing on the Delhi-Bangkok flight, however, there was no confirmation of the bomb scare at Delhi airport.