By Aditya Kalra NEW DELHI (Reuters) – Sonia Gandhi, president of ousted Congress party, on Wednesday accused the new Narendra Modi-led government of a “political witch hunt” after tax authorities began probing her party as she and her son face allegations over misusing funds. The Gandhis are the torchbearers of a dynasty that has led India for most of its post-independence era since 1947 but that was dealt its worst ever election defeat by Modi in the general election that ended in May. Last month a court summoned Sonia and her son Rahul to answer allegations that they used $15 million of party funds to pay off debts accrued by a now defunct newspaper publishing business several years ago. A Congress official said the party had received “notices” from the tax authority, a communication in which the recipient is asked to explain apparent irregularities in his tax declarations. The official said the notices pertained to income tax and were related to the court case involving Gandhi and her son, although he did not give further details.