4 bomb hoaxes in 3 days has the Kolkata police worried.
Two days after hoax calls were made about bomb threat at Netaji Subhash Chandra Bose International Airport, another call was made to the West Bengal secretariat 'Nabanna' today, claiming that a bomb had been planted there.
The threat call sent the police into a tizzy but it turned out to be hoax as nothing was found by the bomb squad.
A male voice called up the state secretariat control room at around 9.30 AM claiming that a bomb has been planted there which will blow up the building at 2 PM today, a senior officer in charge of security at 'Nabanna' said.
"Following the call, security has been beefed up at the secretariat. Generally, two to three check-ups are done on regular basis but today we have added two three more layers to it," he said.
Kolkata police bomb squad personnel and sniffer dogs combed the entire 14-storied building on the banks of the Hooghly river but they did not find anything "suspicious", the officer said.
"We are trying to trace the call by locating its tower position. Hopefully the person will be nabbed soon," he said.
A few months back, one 50-year-old individual was arrested from the city's Kalighat area for making a similar call.
On Wednesday, three phone calls were made threatening to blow up the Netaji Subhash Chandra Bose International Airport. While the first two calls were made to city police headquarters in Lalbazar, the third one was made to Bidhannagar Police Commissionerate, under which the airport falls.
All threats however turned out to be part of an elaborate hoax.