Though no casualty was reported in the incident, a scooter parked there was completely gutted.
Morning walkers and other passers by noticed the vehicle in flames around 5.30 AM and immediately alerted Kumar, the AIADMK worker, who is also actively associated with "Amma Peravai", a party forum named after Jayalalithaa.
Police, who rushed to the spot, found a broken bottle and a fuse wire near the vehicle.
Meanwhile, a petrol filled bottle with fuse wire was also found near a car belonging to Kumar in the premises.