The Ukrainian flight that crashed just outside the Iranian capital of Tehran was struck by an anti-aircraft missile system, a Pentagon official, a senior U.S. intelligence official and an Iraqi intelligence official told Newsweek.
None of the officials was authorized to speak publicly on the matter.
The aircraft is believed to have been struck by a Russia-built Tor-M1 surface-to-air missile system, known to NATO as Gauntlet, the three officials told Newsweek.
One Pentagon and one U.S. senior intelligence official told Newsweek that the Pentagon's assessment is that the incident was accidental.
"Well, I have my suspicions," President Donald Trump told reporters at the White House following Newsweek's report.
"It was flying in a pretty rough neighborhood and someone could have made a mistake.".
Later Thursday, Canadian Prime Minister Justin Trudeau confirmed that his officials have received "intelligence from multiple sources, including our allies and our own intelligence" indicating "that the plane was shot down by an Iranian surface-to-air missile.". »