Senior BJP leader L K Advani apologized to Congress President Sonia Gandhi for a party-appointed task force report, which had alleged that she and her late husband Rajiv Gandhi had accounts in Swiss banks. BJP had appointed the task force on unraveling the amount of black money stashed by Indians in foreign banks and ways to bring it back. The report had alleged that Sonia Gandhi and former Prime Minister Rajiv Gandhi were among Indians who held Swiss bank accounts. This had led Sonia Gandhi to write a letter to Advani denying the allegation.Sources said in the letter, Gandhi had said that neither she nor her husband held Swiss bank accounts. In his reply to the Congress President's letter, Advani expressed regret of her name and that of her late husband being mentioned in the task force report.