The National Investigation Agency (NIA) today conducted raids at multiple locations in a case related to the radicalisation of prisoners by a Lashkar-e-Taiba (LeT) terrorist, an official said. The anti-terror agency carried out search operations at 17 places in Karnataka, Tamil Nadu, and five other states, linked to the suspects in the case. The Bengaluru City Police had originally registered the case following the seizure of arms and ammunition, including seven pistols, four hand grenades, one magazine and 45 live rounds, and four walkie-talkies last year.