The founder of Pakistan's nuclear bomb is bristling with indignation, after four years of enforced silence is finally getting a chance to fight back. He has denied passing on nuclear secrets.Now aged 72 and suffering from prostate cancer, Dr Abdul Qadeer Khan, regarded as a hero by most of his fellow Pakistanis, wants to set the record straight. "They [the allegations] are bullshit and concoctions," said Dr Khan from his villa in one of Islamabad's leafiest residential areas, where he remains under house arrest. "Now I have become the black sheep."In a telephone interview, Dr Khan said the confession had been made "in the national interest" but denied its contents were true. Mysteriously, he said that others "got away scot-free" as a result of him taking all the blame. ome companies working in the nuclear industry in Europe were involved as suppliers. The businesses, based in Europe's most advanced economies including the UK, Switzerland, Germany and Holland provided nuclear technology to Iran and Libya.