Mondal was arrested on Thursday from his rented apartment in Bardhaman town. He is suspected to be part of an ISI-backed network that collects intelligence on VIPs, including Bharatiya Janata Party (BJP) leaders, recruits operatives, and prepares for possible terror activities in West Bengal. The STF believes Sarkar played a crucial role in helping Mondal establish contacts with influential political figures and gather personal information about them.