The Bomb Disposal Squad (BDS) on Wednesday averted a bid of terrorism by defusing about one kilogram bomb planted outside of a primary school at Mandian area here. According to police, the bomb concealed in a plastic bag, was planted outside of the Government Primary School for Boys Hakim Baharat in the limits of Mandian police station. The BDS rushed to the spot and defused it. Police have started search operation in the area.