Chennai, May 20: The residences of senior DMK leader and former Tamil Nadu minister Ko Si Mani and his relatives were raided by sleuths of the Directorate of Vigilance and Anti-Corruption today. The search, which began at Mr Mani's residence in Kumbakonam at 0900 hrs, was still on when reports last came in. Police sources here said that houses of Mr Mani's son and other relatives were also being raided. No further information was immediately available. Bureau Report