Chandigarh, Oct. 5 -- The National Investigation Agency (NIA) has filed a supplementary chargesheet against a key accused in the Sector-10 grenade attack case, allegedly masterminded by

Pakistan-based Babbar Khalsa International (BKI) terrorist Harwinder Singh alias Rinda and US-based gangster Happy Passia.

A Punjab resident, Abhijot Singh alias Babba alias Gopi, who was arrested in April 2025, has been identified as a co-conspirator in the case. Two others, Rohan Masih and Vishal Masih alias Shalu, have already been chargesheeted while Rinda and Passia, who were behind the recruitment, funding, and supply of weapons, have been declared absconders in the case.

According to the NIA, the target of the attack was a retired Punjab Police o...