A power transmission tower in Thirunvalur village in Villupuram district (Tamil Nadu) was damaged by a bomb blast, allegedly by a 'Cauvery Meettpur Padai' (Cauvery Retrieval Army). However, Neyveli Lignite Corporation (NLC) director R. Srinivasan, who visited the spot, 40 kms away from NLC, said power supply was not affected.