Kolkata, March 11 || The police investigation into the recent wave of bomb threats targeting courts, post offices, and passport offices across West Bengal has revealed that the perpetrators utilised Virtual Private Networks (VPNs) and foreign servers to conceal their identities.
Investigators on Wednesday said that the digital trail behind the hoax bomb threats points to servers outside India.
A senior intelligence officer with the West Bengal Police said that the mastermind behind the panic remains at large, and a search is underway to arrest the perpetrators behind the incident.
Last week, a series of bomb scare emails triggered panic in several parts of the state, including Kolkata. Threat messages were reported from courts, post offices, and passport offices on different days. The latest incident occurred last Tuesday at the Regent Park Post Office in the Golf Green area of south Kolkata.