Shimla, Aug. 15 -- The National Investigation Agency (NIA) has arrested three accused in connection with the improvised explosive device (IED) explosion that occurred on January 1, 2026 at about 9.40am near the outer wall adjoining the room of the investigating officer, situated within the premises of Nalagarh police station. The case was originally registered at Nalagarh. The investigation was subsequently taken over by NIA, and the case was re-registered on May 8 under relevant provisions of the Bharatiya Nyaya Sanhita (BNS), the Explosive Substances Act, and the Unlawful Activities (Prevention) Act. During the course of investigation, the involvement of accused Mahavir Kumar alias Kaka, Ajay Mehra, and Manpreet Singh alias Mani in the commission of the offence has surfaced. The arrested accused are the first to be arrested by the NIA in this case. The accused were produced before the special NIA court, Shimla....