Washington, Feb 6 (PTI) The US today said Pakistan's disgraced scientist A Q Khan still posed a "serious threat" with regard to nuclear proliferation and expressed regret over his release from house arrest. The US State Department said if the news reports regarding the release of Khan from house arrest is true then it is regrettable.
Khan remains a serious threat with regard to nuclear proliferation, the department said. The US had last month slapped sanctions on Khan, 12 associates and three firms and barred them from doing business with the American government or private companies while pledging to work for squeezing out the entire network.
Khan was put under house arrest in February 2004 after he spoke on state-run PTV about running a proliferation ring that supplied nuclear equipment and know-how to countries like Libya and North Korea. He was pardoned in 2004 by then Pakistan President Pervez Musharraf and he retracted the confession last year, saying it was made under pressure.