The Mumbai police commissioner then informed Hyderabad police who investigated the matter and later arrested Krishna.
Police in the southern Indian city of Hyderabad on Thursday arrested 32-year-old Motaparthi Vamshi Krishna - a married man with a child -for allegedly sending a hoax email about an aircraft hijack plot in order to avoid going on a vacation with his online girlfriend.
The email said the woman, who claimed that she couldn't provide details of her identity, overheard the conversation while having lunch at a hotel.
The Mumbai police are in process of bringing the youth to the city for further probe, the official said.
Cracking the case of an anonymous email from a "woman" that some persons planned to hijack planes at airports, the Hyderabad police on Thursday zeroed in on M. Vamshi Krishna and arrested him.
An email was sent to Mumbai police in the name of a woman from Hyderabad which hinted that a group of 23 people were planning a plane hijack at Mumbai, Chennai and Hyderabad airports. He created a fake ticket from Chennai to Mumbai for his girlfriend.More news: Trump eyes changes to Obama's tax and Wall Street rules
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Mumbai police subsequently notified airport security agencies to be on heightened alert.
"Vamshi wanted to ensure that his girlfriend would not go to the airport", a police official said.
The Task Force of the Hyderabad Police Commissioner tracked the Internet Protocol address and traced it to the SR Nagar cyber cafe. "They spoke some other things also but I (could) not hear them, as I heard only these few sentences from them".
"He didn't have the money, but if he canceled because of that, it would have hurt his pride, and his friendship with this girl could have come to an end", Deputy Commissioner of Police B. Limba Reddy said during a press conference.
Police booked Vamshi Krishna for cheating, impersonation, giving false information and under relevant sections of Information Technology Act. Vamshi called her and said that her flight was cancelled due to the hijack alert. Vamshi Krishna said that he had met the girl on Facebook. If found guilty, he could face five years in prison and a $150 fine.