Ukrainian officials, meanwhile, said it was too early to determine the cause. He extended his condolences to the families of the victims. According to Ukraine's Foreign Minister Vadym Prystaiko, 82 people on board were Iranian, 63 Canadian, and 11 Ukrainian, including nine crew members. Ten were from Sweden, four from Afghanistan, three from Germany and three from the United Kingdom.
«We express our condolences,» he said. It disappeared from the radars a few minutes after departure. Ukrainian embassy in Iran originally said that the crash was likely caused by an engine problem. It also ruled out terrorism and rocket attack as possible causes.
However, it later removed that information from its website and said the cause of the crash was being determined. Video from the scene showed what appeared to be pieces of an aircraft fuselage, an engine and other debris. UIA's vice president of operations, Igor Sosnovsky, said in a press conference earlier Wednesday the plane's captain had more than 11,000 hours of flight experience, almost all of it on a Boeing 737. The airline said the aircraft was built in 2016 and delivered directly to them from the manufacturer.
The last scheduled maintenance took place on Monday, it added. «An investigation will be conducted with the involvement of the aviation authorities of Ukraine, Iran, representatives of the Boeing manufacturer, the airline, and the National Bureau of Air Accidents Investigation of Ukraine,» UIA said. In a statement on Facebook, Ukraine's president asked everyone «to refrain from speculation and putting forward untested versions of the disaster before the official announcements». He later said he instructed the country's Attorney General to open criminal proceedings into the crash.
«We have to work out all the possible versions,» Zelenskiy added. «Regardless of the conclusions as to the causes of the crash, the airworthiness of the entire civilian fleet will be examined». Secretary of the National Security and Defense Council of Ukraine also urged Wednesday not to rush to conclusions about the causes of the crash.