Jalandhar, Oct. 6 -- The National Investigation Agency (NIA) has filed a charge sheet against four people, including pro-Khalistan operatives, for the alleged involvement in a grenade attack at former Punjab minister Manorajan Kalia's residence in Jalandhar in April this year, the agency said on Sunday. The charge sheet has been filed against two arrested persons -- Saidul Ameen from Amroha and Abhijot Jangra from Kurukshetra, and two absconders -- Kulbir Singh Sidhu from Yamunanagar and Manish alias Kaka Rana from Karnal, before a Chandigarh court on Saturday. FULL REPORT ON PAGE 2...