NEW YORK - Farah Ispahani, MNA and a spokesperson of the Pakistan People's Party, has denied an American magazine's claim that her party Co-Chairman Asif Ali Zardari remains under criminal investigation in Switzerland over allegations that he received kickbacks from two Swiss-based companies in the 1990s, saying the case has been closed. "Mr Zardari feels that you have been misinformed and that the case that you are referring to is closed," wrote Ms Ispahani, in response to an e-mail from Newsweek. "Please be careful about reporting something that may have been planted," said Ms Ispahani, who is the wife of Pakistan's Ambassador to the United States Husain Haqqani. But Newsweek still went ahead with its long investigative report, which appeared on its website on Thursday. The report, citing an unnamed Swiss judge and two Swiss lawyers close to the case, said, "Zardari, who has always claimed that corruption allegations against him were politically motivated, may be using his growing political clout in Islamabad to pressure Swiss authorities to curtail, or even close, their long-running investigation into his affairs". US officials, the weekly magazine said, remain wary of Zardari because of corruption allegations that have swirled around him for years. "In the 1990s, when Benazir Bhutto served two terms as prime minister and her spouse served a stint as investment minister, Zardari earned the nickname of 'Mr Ten Percent' because of allegations that he had received kickbacks on state contracts. He spent more than eight years in jail in Pakistan during corruption investigations, though he was never convicted of any crime," the report said. "Zardari, Bhutto and their supporters have always maintained that the corruption allegations against the couple were trumped up by powerful political enemies, including both Musharraf and Nawaz Sharif. Lawyers for Bhutto and Zardari say they always maintained their innocence of any corruption or other criminal accusations," it said. "For most Pakistanis this is a matter that is now closed," an unnamed senior Pakistani government official was quoted as saying by Newsweek. "The primary motivation behind the investigations was political."