New Delhi [India], October 22 (ANI): The National Investigation Agency (NIA) announced on Tuesday that it has filed a chargesheet against a key associate of Khalistani terrorists Rinda and Landa in a Punjab terror conspiracy case. The chargesheet against Gurpreet Singh, also known as Gopi, from Tarn Taran (Punjab), was submitted to the NIA Special Court in Mohali. The NIA has identified him as an associate of internationally designated terrorists Harwinder Singh Sandhu, aka Rinda, and Lakhbir Singh, aka Landa, who are affiliated with the banned terrorist group Babbar Khalsa International (BKI)…