A Pakistan court has declared that disgraced nuclear scientist A Q Khan is a free citizen. It ruled that authorities cannot not restrict his movements or activities within the country.Acting on a petition filed by Khan challenging restrictions imposed on him by the government, Justice Ijaz Chaudhry of the Lahore High Court declared him a free citizen.While holding the authorities responsible for providing security to the scientist, the judge directed government to implement an agreement with Khan on his movements in letter and spirit.Khan was put under house arrest in early 2004 after he admitted on state-run TV to running a clandestine nuclear proliferation ring.