Amritsar, March 18 -- Gursidak Singh, alias Sidak, wanted for the grenade attack on the Thakur Dwara temple in Amritsar, was killed in an exchange of fire with police at Bal Sachander village near Sri Guru Ramdas Jee International Airport in Punjab's Rajasansi area on Monday while another suspect, Vishal, managed to flee and efforts were on to arrest him, officials said....