Iranian television had announced that the plane, which had 176 people on board, had crashed over the Iranian capital.
According to the Iranian airline, most of the passengers on the crashed Ukrainian plane are Iranians.
The official Iranian news agency, "IRNA", said that the air disaster resulted in the "killing of all passengers."
The airport spokesperson stated that the plane was carrying 176 people, including 167 passengers and 9 crew.
The news agency "Reuters" quoted the agency "Fars", that the plane, a Boeing 737, crashed shortly after take-off from Khomeini airport in Tehran, due to "technical problems."
The spokesman of the country's emergency management agency, highlighted that ten ambulances rushed to the scene. Initial information indicates that the Ukrainian Airlines plane was heading to Kiev.