A Dubai-bound IndiGo flight, carrying 178 passengers and six crew members on board, was airborne for about an hour when it was forced to make an emergency landing in Mumbai, India, on May 2, 2018, after a smoke alarm went off in the aircraft’s cargo hold.

The aircraft, an Airbus A320, took off from Mumbai at around 8.15 p.m. local time and made an emergency landing at the main runway of the Chhatrapati Shivaji International Airport (BOM) in Mumbai at around 9.15 p.m. local time, sources told the Times of India.

In a statement, the airline said: "IndiGo flight 6E 61 from Mumbai to Dubai made a precautionary air turn back due to a smoke warning in the cargo compartment. The aircraft has landed safely in Mumbai," the Indian media channel Mid-Day.com reports.

The aircraft was reportedly inspected after landing at the airport. It was found that the warning was a false alarm, as no smoke was detected.

The same day in Delhi, a dust storm followed by thunder disturbed several flights. A few planes had to wait for open slots to take off, sometimes resulting in a change of crew as pilots went off flight duty time.

This was too much for passengers of an IndiGo plane bound for Guwahati. An angry mob formed as they walked out on the taxiway in order to protest. They say the reason and the duration of the delay were not communicated to them, hence their anger.

Airport security intervened to disperse the crowd and prevent them from advancing further on the airport apron. The flight eventually took off, five hours behind schedule.