In Tamilnadu, the Directorate of Vigilance and Anti Corruption today conducted searches at the residence of DMK leader and former Minister Suresh Rajan in Tirunelveli and Kanyakumari districts on charges of possessing disproportionate assets. Sources said, Rajan, who held the Registration and Tourism portfolio, is the sixth former DMK minister against whom action has been taken by the Jayalalithaa government after it came to power in May.Vigilance officials had earlier conducted raids at the residential premises of K Ponmudi, Veerapandi S Arumugam, K N Nehru, N K K P Raja and M R K Paannerselvam following complaints of land grabbing.