#ImranKhan #geonews #breakingnews <br /><br />-LAHORE: Pakistan Tehreek-e-Insaf (PTI) and former prime minister Imran Khan said Saturday that his lawyers had filed a defamation case against Geo TV, its anchor Shahzeb Khanzada and businessman Umar Farooq Zahoor in UAE over leveling allegations regarding Toshakhana gifts, ARY News reported.