Assam STF arrests 2nd suspect in Pakistan spy network. Assam STF arrested Ritesh Kumar Singh (39), from Bihar, for allegedly aiding prime accused Abhishek Kumar Singh in leaking sensitive defence and security force information to a Pakistan Intelligence Operative. Abhishek was arrested on October 3-4 from Guwahati. Mobile phones, SIM cards, and restricted documents were seized. Counter-intelligence units are probing the network's full scale.