Vasan told reporters that stringent action would be taken against those indulging in acts like tearing posters with pictures of the Congress party's national and regional leaders.
He was referring to reports of some of his supporters tearing up posters and making critical remarks about the Congress leadership.
Vasan said he has no dislike for the Congress and he had difference of opinion with the party on the ways to achieve the common goal of bringing back 'Kamaraj rule'.
Former Tamil Nadu chief minister K. Kamaraj's name is synonymous with good governance in the state.
Meanwhile, Tamil Nadu Congress's new chief E.V.K.S. Elangovan termed Vasan's decision to float a new party as "opportunistic" and said it would not affect the Congress.
He said three of the five legislators were with the Congress and the majority of the party's former legislators were still with the party.