Such conditions were laid down by Iran because the crash occurred near Tehran, the capital of Iran.
In accordance with the rules of international law of the United Nations, it is Iran that takes the greatest responsibility for the investigation of the crash.
Ukraine is also involved in this case because its flight crashed, as well as the United States, which owns aircraft designer Boeing. Since the engines of the aircraft were manufactured in France, it will be also brought into the investigation.
It is worth noting that an emergency response center was created due to the crash of a Boeing 737 aircraft of Ukraine International Airlines in Iran. This was reported on the official website of Ukraine's National Security and Defense Council.
As we reported earlier, Boeing 737 of Ukraine's International Airlines, flight PS 752 with 176 passengers aboard crashed in Tehran, not far from Imam Khomeini airport. Iranian Tasnim News Agency informed about that, pointing out that the reason of the crash was a "technical malfunction".
As of 7 a.m. January 8, the fate of passengers remained unknown. Local authorities feared that no one survived, because the plane was visibly on fire as it was falling, CGTN reported.