Lucknow, Oct 1 (IANS): Janata Party president Subramanian Swamy Saturday said he was gathering proof of corruption against Congress chief Sonia Gandhi's son-in-law Robert Vadra.

"I am in the process of gathering evidences to prove his (Robert Vadra) involvement in corruption...As of now, I am not going to disclose anything further in this regard," Swamy told reporters at a press conference here.

Declining to share the "nature of the scam" Vadra is allegedly involved in, Swamy said: "Whenever I make an attempt to expose corrupt individuals, my integrity is questioned."

"When I exposed A. Raja's involvement in the 2G scam, the opponents termed me an anti-Dalit. Likewise, when Kanimozhi was arrested in the scam, it was said that I acted against her just because she was a woman, and I hated women in general...it's all baseless. I always substantiate my charges with the documents I collect on my own," he said.

Pulling up the Central Bureau of Investigation (CBI) for its probe into the 2G scam, Swamy added: "Even as there are records indicating P. Chidambaram's role in the scam, he has not been made the co-accused in the case...I will try to make him a co-accused in the case."

He said his party would contest 50 seats in the upcoming Uttar Pradesh assembly elections, and that he was ready to make "adjustments" with the Bharatiya Janata Party (BJP) in this regard.

"Now, it depends on BJP to decide on the matter," said Swamy.