PML(N), backed by the Human Rights Commission, challenged the results of the referendum but Chief Justice Irshad Hasan Khan dismissed the petitions while rejecting the challenge and upholding the results. Information Minister Nisar Memon dismissed allegations of fraud as propaganda created by the opposition and stated that "Those who opposed the referendum preferred to stay at home and didn't create any problem." The credibility of the claims of illegitimacy is added when American Pattan Development Organization conducted a Gallup survey that founded that the "people are likely to elect either Benazir Bhutto or Nawaz Sharif as the next prime minister" in preference to President General Pervez Musharraf. According to the survey, Musharraf had only 9% public approval as opposed to Benazir Bhutto and Nawaz Sharif. Foreknowledge about coup In 1999, Lt. Gen Tariq Pervez, Commander XII Corps, had ultimately warned Nawaz Sharif of a military take over if Musharraf were dismissed from the command of the military. In the television news media and the political pundits had long speculating of a military takeover in the country as soon as General Karamat was dismissed by Prime Minister Sharif, and General Musharraf himself had sent a secret message of serious repercussion if he was to be removed. It is claimed by authors that Prime Minister Sharif had well political intelligence on Musharraf's intention and had sought US President Bill Clinton's help against the military intervention. In 1999, Benazir Bhutto held all blames on Nawaz Sharif for the military takeover and criticized him stating "the man is violating every rule of law and, there is no-one to stop him." In 2002, Admiral Bokhari quoted that: he knew about General Musharraf's plans to topple [Prime Minister] Nawaz Sharif and did not want to be part of these "Dirty Games". Admiral Bokhari also noted that a power struggle between an elected Prime Minister and appointed-Chairman joint chiefs ensued and relations were severely damaged after the Kargil war. Admiral Bokhari testified in media that: "The two men could not work together, both were preparing to take active actions against each other. I could see that there now two centres of power on a collision course". At an informal meeting held at the Navy NHQ in September 1999, Chairman Joint Chiefs General Musharraf indicated his displeasure with Prime Minister Nawaz Sharif's handling of the country describing Prime Minister Sharif as "incompetent and incapable of running the country."