The Turkish Air Force claims to have identified a heat source at the suspected crash site of the helicopter which had been carrying Iranian President Ebrahim Raisi, the Turkish state news agency Anadolu reported early Monday morning. According to the report, a drone supplied by the Ministry of Defence delivered images of the site and transmitted the coordinates to Iranian authorities. Anadolu also published an aerial image showing a black spot that stands out clearly from its surroundings. The helicopter with Raisi and Iranian Foreign Minister Hussein Amirabdollahian on board suddenly disappea…