Authorities in Iran do not expect any survivors from an Aseman Airlines domestic flight which crashed in a mountainous region in bad weather.
The twin-engine turboprop ATR-72 plane was carrying 65 passengers and crew.
Aseman Airlines spokesperson Mohammad Taghi Tabatabai told state TV all aboard were almost definitely all killed when the plane went down near the city of Yasuj.
"The plane had 60 passengers, 59 adults and one child, as well as a pilot, a co-pilot, two flight attendants and two air marshals on board."
State-run IRNA news agency reported one passenger had somehow missed the flight, taking the likely death toll to 65.
Rescue teams had been unable to reach the crash site on Sunday due to bad weather and poor visibility.
Tabatabai said the plane crashed into Mount Dena, which rises more than 4,000 metres.
The airline had six ATR planes, and the one that crashed was nearly 25 years old, Aseman Airlines CEO Ali Abedzadeh said.
The country has experienced several air crashes over the years due to ageing fleets of the major airlines thanks to years of international sanctions.
Airlines including Aseman have since rushed to buy up new jets from Boeing and Airbus following the landmark nuclear deal signed two years ago.
