Mumbai/Thiruvananthapuram: The Maharashtra Anti-Terrorism Squad (ATS) on Friday arrested a 23-year-old from Thiruvananthapuram after sent an email threatening to blow up the Chhatrapati Shivaji Maharaj International Airport if he was not paid 'US$1 million in Bitcoin', according to an official.

The ATS started the probe after the Mumbai International Airport Limited, which operates the airport, received a threatening email in its feedback inbox at 11.06 am on Thursday, the police official said.

"This is a final warning to your airport. We will blast Terminal 2 in 48 hours unless one million US dollars in Bitcoin is transferred to the address. Another alert will be after 24 Hrs," the email read.

A First Information Report (FIR) was registered under Indian Penal Code sections 385 (putting a person in fear of injury in order to commit extortion) and 505 (1) (b) (statements made with intent to cause fear or alarm to the public or against the public tranquillity) at the Sahar police station.

The ATS cyber cell, which started a parallel investigation, traced the IP address from which the email had been sent to Kerala, following which a team flew to the southern state and nabbed the accused.

He would be brought to Mumbai and be handed over to Sahar police, the official said without disclosing the accused's identity.
(With PTI inputs)