Senior BJP leader and Rajya Sabha MP Subramanian Swamy on Thursday described Ratan Tata as the most corrupt chairman in the history of the Tata Group. "The most corrupt person in Tata history is Ratan Tata. He is not even a Tata, as his father was an adopted child," he said.  Speaking of ugly Tata-Mistry public spat, he said that Ratan Tata was doing a grave injustice to Cyrus Mistry. He was of the opinion that since the entire Tata Board was appreciating Cyrus Mistry’s work, only two months ago, it must have been Ratan Tata’s jealousy that prompted the sacking of Mistry. Swamy was addressing the media in Raipur, when he said that Ratan Tata has been part of major scams such as the 2G scam, Air Asia scam, the Jaguar deal and the Vistara partnership scam among others. Mistry, who was removed by the Board of Directors,  had written that letter to defend his decisions taken during his period as the Group Chairman and also highlighted the problems he inherited.