A Turkish Airlines flight landed in the Indian capital, New Delhi, on Tuesday after a supposed bomb threat, Reuters quoted an Indian security official as saying.

'There was a bomb threat to the Turkish Airlines flight and therefore they decided to land it in New Delhi,' an official from the federal Central Industrial Security Forces said.

India's crack National Security Guards had been put on alert, Times Now TV said. It said the plane with 148 passengers had made an emergency landing in New Delhi during the Istanbul-Bangkok TK-65 flight.