New Delhi, Sept. 15 -- The National Investigation Agency (NIA) has filed a chargesheet against three accused in connection with the March 15 grenade attack on Thakurdwara Sanatan Temple in Chheharta, Amritsar, an attack allegedly orchestrated by KLF operatives. The attack was carried out by two bike-borne assailants, Gursidak Singh and Vishal Gill, under the guidance of foreign-based handlers, the NIA said.P2...