In a terse response, Rahul Gandhi's office has shot off a letter to the Janata Party president, terming his allegations "as utterly false, baseless and defamatory."Terming Swamy's accusations as "scandalous abuse" and "defamatory" the Gandhi scion has said he will sue Subramanian for libel.Gandhi has also questioned Swamy's motivations saying, "Your action of calling a press conference is a motivated attempt for reasons which one can easily discern".Calling Swamy's press conference irresponsible, the letter says, "we shall pursue all proceedings that are available in law to ensure that an individual like you and an organisation like yours do not abuse the freedom to speak and write in utter violation of the equally important need in a civilised society to maintain the dignity of individuals and organisations and to abide by the law of the country."On Thursday, Swamy claimed that the mother-son duo held 76 per cent shares in Young Indian Pvt Ltd, which took over Associated Journal Publisher of the National Herald group. He also alleged that Rahul did not mention his shares in his nomination paper filed before the Election Commission of India (ECI) ahead of the 2009 Lok Sabha polls. He said that the Congress general secretary wrote "nil" in the column where he was supposed to mention his shares and debentures in the nomination paper.Swamy further alleged that Associated Journal obtained an unsecured zero interest loan of over Rs.90 crore from the All India Congress Committee (AICC), which was "illegal because no political party can enter into a commercial contract". Later, for a mere Rs.50 lakh, Young Indian wrote off the loan due to AICC.By a board resolution, dated February 20, 2011, Associated Journal was sold by transfer of shares to Young Indian, which is not a newspaper or journal producing company, he said, claiming that the seven-storey Herald House on Delhi's Bahadur Shah Zafar Marg was opened illegally for renting purpose.Swamy alleged that a Passport Seva Kendra was opened on two floors of the building even as then external affairs minister S.M. Krishna inaugurated the office. He said huge amount was being collected by Young Indian as rent for the Passport Seva Kendra.He also questioned how Young Indian's general body meeting (GBM) was conducted at Sonia Gandhi's government residence, alleging that it was illegal to have business meetings on such premises because the company was earning money from it.Swamy said he has written to Prime Minister Manmohan Singh and the ECI complaining about the alleged wrongdoings by the mother-son duo of Congress top brass. He said he was confident that the prime minister would not even acknowledge receiving the letter, so he would move court against it sometime in December.