India's opposition has turned its attack on ruling Congress party chief Sonia Gandhi after a leading member quit the cabinet over charges that he and the party skimmed money from the U.N. oil-for-food scheme in Iraq.

The Hindu nationalist Bharatiya Janata Party is demanding that Mrs. Gandhi resign as head of the National Advisory Council, an important government-appointed body.

The party says it will not relent despite minister Natwar Singh's resignation because the fight is against corruption, not an individual. It also accused the government of applying different rules for Mr. Singh and Mrs. Gandhi.

Mr. Singh quit his foreign ministry portfolio last month pending a judicial probe into the scandal in which he and Congress allegedly received four million barrel oil vouchers from Iraq at very low prices. Tuesday, he resigned from the cabinet itself.

Some information for this report provided by AFP.