Security has been increased at Netaji Subhas Chandra Bose International Airport in Kolkata after the authorities received an email threat today.

The airport manager received an email which said that the airport would be blown up within 24 hours. It was claimed to have been sent from Germany, officials said.

Source: b'Security has ben increased at Netaji Subhas Chandra Bose International Airport in Kolkata. (Representational image)'

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

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