KHYBER AGENCY - Two explosive devices were defused, planted by unknown militants on Sunday here Zayarai area of tehsil Landi Kotal, official and local sources said.The sources said that on tip off of local residents,the Khasadar and forces personnel rushed to the scene, cordoned of the whole area and disposed the bombs. The explosive had been hided in water cooler, locals said. A case had been registered against the undisclosed militants and launched investigation, sources said.