Talking to reporters at the Chennai airport here he said, "The allegations are a systematically planned campaign to malign me and my party."
The Textile Minister said that he became a "political untouchable" after tendering his resignation in May 2008.
"After I resigned in May, there could have been an investigation. That was my position then. I was a political untouchable during that period. When I was not a minister nobody wanted to get in touch with me. I have never helped anyone. I was pushed out of political circle," he said.
On allegations that he got BSNL to connect over 300 telephone lines to his Chennai house for his family business, he said, "What they have questioned is not only my integrity but my family''s integrity, my party's integrity."
Asserting that he had never helped anyone (as made out in the allegations), nor was he benefited, Maran said, "If I have done any wrong, I am open for any kind of probe."