NEW DELHI, INDIA: After home minister P Chidambaram, Janata Party chief Subramanian Swamy's next target is UPA chairperson Sonia Gandhi.

To a CIOL query, Swamy said: "Unki (referring to Gandhi) baari bhi aayegi (her turn too will come).” Further, he said, "first, I want to make Chidambaram, a co-accused in the 2G scam case."

Swamy in his letter to the Prime Minister has sought a probe into the alleged involvement of Gandhi's two sisters, Nadia and Anushka, in the controversial 2G spectrum allocation. His allegation, however, was not supported by any evidence. Swamy claims that they have received kickbacks to the tune of Rs.. 18,000 crore.

Read the letter of Subramanian Swamy to PM

The frequent travel of Sonia Gandhi and her immediate family to Dubai, Malaysia and Hong Kong as well as parts of Europe, including London, requires to be probed under the law, stated Swamy. He also said that these trips were undertaken in charter planes provided by the companies, which are accused in the case.

The CBI special trial court may have refused to accept his plea to make home minister P Chidambaram a co-accused in the 2G swindle, but Swamy is no mood to give up.

This despite Justice Saini's denial to indict Chidambaram. Saini had said there was no material on record to show that P Chidambaram was acting malafide in fixing the price of spectrum at the 2001 level or in permitting dilution of equity by the two companies.

As a petitioner has three months to challenge any judgment in higher court, Swamy said that he would prove his allegations against Chidambaram in the apex court, soon.