Changing Tactics, New Mechanisms Of Terror Groups Have Security Forces On Tenterhooks by IANS - Jul 25, 2021 03:59 AM Representative image of terrorists (Pic by PTI) The arrest of three Jamaat-ul-Mujahideen Bangladesh (JMB) terrorists from Haridevpur in South Kolkata followed by several arrests and their subsequent interrogation has led the police to believe that the militants coming from or through Bangladesh are not following the traditional patterns of operation. They are adopting new methods and mechanisms which are helping them to avoid security surveillance and expand their organisation. West Bengal, which shares 2,217 km of the total 4096 km border with Bangladesh, has always been a soft target for the Bangladeshi terrorists. But now, sleuths of the Kolkata Special Task Force (STF) investigating the terror modules operating in the state have reasons to believe that not only from Bangladesh but extremist groups from Pakistan and agents from China are also making their way to India through this route.