Sixty-six people are feared to have been killed in a passenger plane crash in the Zagros mountains in Iran. The Aseman Airlines plane, en route from Tehran to the south-western city of Yasuj, came down near the city of Semirom in Isfahan province. The Red Crescent deployed search and rescue teams to the site. The airline has retracted a statement saying definitively that all aboard were dead. Flight EP3704 left Tehran at 04:30 GMT, and crashed about an hour later.