The election flying squad on Monday searched Makkal Needhi Maiam chief Kamal Haasan's vehicle in Thanjavur district.
Haasan was on his way to Trichy for a public meeting ahead of the state Assembly polls in the state.
MNM will be contesting 154 of 234 assembly seats. Of the remaining 80 seats, MNM's two alliance partners -- All India Samathuva Makkal Katchi (AISMK) led by R Sarathkumar and TR Paarivendhar's Indhiya Jananayaga Katchi (IJK) -- will contest 40 seats each.
Assembly elections in Tamil Nadu will be held on April 6 and the counting of votes will take place on May 2.