Search and rescue teams are continuing to search for an Iranian plane that crashed in bad weather on Sunday.
On Tuesday, the Isfahan province emergency centre said that a mobile phone of one of the passengers had transmitted signals from a location near Mount Dena where helicopters did not manage to reach due to bad weather, Press TV reported.
However, US President Donald Trump's refusal to recertify the deal has injected uncertainty into those sales.
The airlines' public relations chief Mohammad Tabatabai told state broadcaster IRIB that Aseman Airlines flight EP3704 disappeared off the radar several minutes after takeoff. Iran Air Crash is a way too common for the aviation in recent times.
Sixty-six people including a child were killed earlier today after a ATR-72 commercial plane crashed in a mountainous area of Iran.
President Halimah Yacob wrote to Iran's President Hassan Rouhani following the plane crash in central Iran last Sunday (Feb 18). Authorities initially said the crash killed 66.
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Dense fog, high winds and heavy snow in the Zagros Mountains made it impossible for rescue crews in helicopters to reach the site in the immediate aftermath, state TV reported.
"After searching the area, we learned that, unfortunately ... our dear passengers had lost their lives", Tabatabai said. The deputy head of the Iranian Space Agency, Mojtaba SaradeghiIran said the government has asked for assistance from European countries and China in the search operation with their satellite imagery.
However, Aseman Airliner's technician and training manager, Capt. Bahador Ashayeri, denied any technical problem with the missing ATR plane. It is the third largest airline in the country by fleet size - 29 aircraft including six ATR aircraft - right after Iran Air and Mahan Air. Though the 2015 nuclear deal lifted some of those sanctions, many older planes are still in service.
The Tasnim news agency said referring to the air carrier's director that there were no survivors of the crash.
Decades of global sanctions have left Iran with an aging commercial airline fleet, and accidents have increased in recent years.