The CISF detained the passenger and later handed him over to Mumbai Police who were questioning him to find out his motive.

The CISF official said the passenger seemed mentally disturbed.

For the IndiGo airlines, this was the second instance of panic midair. On Feb 2, its flight E 664 made an emergency landing at Delhi's Indira Gandhi International Airport as three passengers created a hijack scare during the flight.

After landing, the plane was taken to an isolation bay and passengers were asked to remain seated as commandos checked the aircraft. The three passengers were later detained for unruly behaviour.