Ukrainian Foreign Minister Vadym Prystaiko said 82 of the people on board were Iranian, 63 were Canadian and 11 were Ukrainian, including the nine crew members. Ten were from Sweden, four were from Afghanistan, three were from Germany and three were from the United Kingdom.
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World leaders and intelligence officials say the plane likely was struck by accident. Canadian Prime Minister Justin Trudeau and British Prime Minister Boris Johnson said Thursday that the flight may have been hit by an "unintentional" Iranian missile launch.
A Western intelligence official told NBC News that there was high confidence that the plane was felled by an accidental missile strike. The source, who receives high-level briefings from U.S. intelligence agencies, said the evidence included satellite imagery and intercepted communications.
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The plane's operator, Ukraine International Airlines, said the plane took off from Imam Khomeini International Airport en route to Ukraine's capital, Kyiv, at 6:10 a.m. local time (9:40 p.m. ET). It disappeared from radar a few minutes after departure.
Using satellite imagery and social media posts showing the moment the plane crashed, NBC News' Social Newsgathering team verified that the video does appear to show Flight PS752 being struck in midair by a foreign object Wednesday morning in Iran. The determination was made by pinpointing where the video most likely was recorded.
Flight tracking data from the website FlightRadar24 shows that the plane traveled near Parand, and satellite imagery from the area paints a clearer picture of what viewers see in the Telegram video.
Features of a white building to the left of the video match closely with what's shown in satellite imagery from the same area in Parand.
In a separate video that surfaced Wednesday, also verified by NBC News' Social Newsgathering team, a person is heard saying the name "Ferdosiye," which is a city about 22 miles from Parand. The locations are relatively close to where the aircraft debris was recovered. The crash site appears to be near the village of Khalajabad, according to the satellite imagery firm Maxar.
The crash of Flight PS752 came just hours after Iran targeted two air bases housing U.S. troops in Iraq.
Wednesday's crash was the only major plane crash near Tehran to have occurred at night since 2005, according to flight history information. State TV reported that authorities found the downed aircraft shortly after 6 in the morning.
Suzanne Ciechalski is a New York-based reporter for NBC News' Social Newsgathering team.
Jareen Imam is director of Social Newsgathering for NBC News, leading a team of reporters to find, verify and report on trending and breaking news stories.
Ken Dilanian, Shamar Walters, Rima Abdelkader, Caitlin Fichtel, Caroline Radnofsky and Brandy Zadrozny contributed.