American and allied officials said on Thursday that they had intelligence that missiles fired by Iranian military forces were responsible for the downing of a Ukrainian jetliner in Iran and the deaths of all aboard this week in Iran, most likely by accident.
The disclosures suggested that the deaths were a consequence of the heightened tensions between Washington and Tehran that have played out since a US drone strike killed a top Iranian general last week.
Prime Minister Justin Trudeau of Canada, citing a preliminary review of the evidence, called for a full investigation. The jetliner was carrying 63 Canadians among its some 176 passengers and crew.
President Donald Trump, speaking earlier at the White House, said only that he suspected that the downing of the plane was the result of “a mistake on the other side”. Senior US officials were more forthcoming, saying they had a high level of confidence in their findings.
US intelligence agencies determined that a Russian-made Iranian air defence system fired two surface-to-air missiles at the plane, one official said.