The Mumbai police arrested a male passenger on?a Delhi-bound Vistara flight from Mumbai?after a crew member?heard him talking about 'hijacking' on phone, an official said on Friday.?

The incident occurred on Thursday night at the Chhatrapati Shivaji Maharaj International Airport, the official?said.?

"A crew member of the Vistara flight, which was to go to Delhi, overheard a male passenger talking about hijacking on his phone. The crew member immediately informed the authorities and the police were also alerted," the police official said, as per PTI.

The passenger said that he is mentally ill, due to which he had such a conversation on the flight.??

A first information report (FIR) under section 336 (rash or negligent act that endangers human life or the personal safety of others) of the Indian Penal Code (IPC) was registered against the passenger, the official?said.