The location of the ATR-72 plane's black box that crashed in Iran, has been established, the source said.
The bodies of 45 passengers have so far been found and many of the remaining bodies are buried under ice and snow, state media reported.
More than 100 rescuers are working at the crash site, seven helicopters are also involved in the search, RIA Novosti reported.
Aseman Airlines flight EP3704 disappeared on Sunday morning in the Zagros range with 66 people on board, around 45 minutes after taking off from Tehran. After two days of heavy snow and fog, the weather finally cleared on Tuesday morning, giving helicopter teams much better visibility.
