NEW DELHI, Sept. 27 (Xinhua) -- A private airlines' cabin crew had to offload an unruly passenger who tried to enter the cockpit even as the flight was preparing to take off from Indian's financial capital city of Mumbai, confirmed the airlines' official on Thursday.

The flight of private airlines Indigo was on the Mumbai-Kolkata route.

As the unruly passenger forcibly insisted on entering the cockpit for charging his mobile phone and refused to relent, he was offloaded by the airlines' crew following the standard operating procedures.

The passenger was removed from the flight and taken to the Mumbai airport police station by the airline's security staff. He was let off after questioning.

A statement issued by the private airlines reportedly said "Following standard operating procedures, the captain operating flight number 6E-395 from Mumbai to Kolkata initiated the offloading of the passenger on grounds of a security violation."

During the interrogation by the police, it was found that the passenger was in an inebriated state.

In a similar case reported by the New Delhi Television (NDTV), a passenger onboard another private airlines GoAir flight from Delhi to Patna attempted to open the rear door of the aircraft mid-air allegedly mistaking it for a toilet. He was apparently a first-time flier.

Another passenger raised an alarm after which the man was stopped by the crew. On arrival in Patna, the capital city of eastern state of Bihar, the passenger was handed over to the Central Industrial Security Force (CISF).