Imran Khan’s sister Noreen Niazi was hospitalised after reportedly suffering a heart attack in custody. PTI expressed concern, alleging her family was not informed of her condition. Pakistan's former Prime Minister Imran Khan's sister, Noreen Niazi, has been hospitalised after her health deteriorated in custody. She was admitted with heart-related complications and high blood pressure. Sources in Pakistan Tehreek-e-Insaf (PTI) told ABP News that Niazi suffered a heart attack while in custody.