Observes proving ownership of companies is PTI’s responsibility and dates are important in this regard; seeks record to see when Nawaz assumed key govt offices and when he was exiled; questions raised in hearing should not be subject of media discussions ISLAMABAD: The Supreme Court on Wednesday asked the counsel for Chairman Pakistan Tehreek-e-Insaf Imran Khan to prove that the Sharif family owned the Mayfair flats before 2006. It observed that proving the ownership of...