Weather data for Urmia Airport in northern Iran, where an Iran Air aircraft has reportedly crashed, shows it has been experiencing poor visibility and snow for several hours today.
The latest indications, from Iranian state media, point to the aircraft being a Boeing 727 with 94 passengers and eight crew.
Preliminary information suggests that there are survivors from the accident, although details remain sketchy.
Iran Air operates various types on the route, including Fokker 100s.
The flight, due to operate between Tehran Mehrabad Airport and Urmia, is said by state media to have been delayed at departure by the weather conditions.
Source: Air Transport Intelligence news