The security at the Netaji Subhash Chandra Bose International Airport here has been beefed up on Sunday after an email threat indicated that it would be blown up within 24 hours, airport officials said.

The mail came in the airport manager’s email ID early on Sunday and it was claimed to have been sent from Germany, officials said.

While the cyber crime team of the airport is checking the veracity of the content of the mail, security agencies have beefed up vigil in and around the airport.

Luggages and cars of passengers are being throughly checked while various parts of the airport are being scanned, officials said.