"Once again justice has prevailed. I stand vindicated, for the second time," Dayanidhi Maran said in a statement.
He said he has been stating from day one that these cases were "politically motivated and foisted falsely, out of jealousy and business rivalry against my brother and to defame me, my family and my party."
"In both the cases, the court has found that there was neither merit nor substance in the allegations levelled against me and discharged me from these cases," he said.
"Now, I stand vindicated," he added.
He alleged lies were spread as news "and I was made to look like a villain. But, truth triumphed in the end."
"This is a watershed moment for me. I take this opportunity to thank my beloved leader (apparently DMK president M Karunanidhi, party members, family, friends and well-wishers who stood by me during these long and hard years," he said.
Holding that there was no sufficient material to frame charges against any of them, Special judge S Natarajan allowed the petitions filed by the Maran brothers and others seeking their discharge.
The CBI had alleged that an illegal private telephone exchange was set up at the city residence of Dayanidhi Maran during 2004-06 when he was the telecom minister and it was used for the business transactions involving the Sun Network owned by his brother Kalanithi.
The central agency had alleged that Dayanidhi had caused a loss of Rs 1.78 crore to the exchequer.
During the hearing of the discharge petitions, the Maran brothers and others argued that they were innocent and did not commit any irregularities as alleged by the prosecution.
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