Citing information from allies as well as Canada's own intelligence, Trudeau said the plane appeared to have been hit by an Iranian surface-to-air (SAM) missile. "We know this may have been unintentional. Canadians have questions, and they deserve answers," Trudeau told reporters.

from Times of India https://timesofindia.indiatimes.com/world/middle-east/iranian-missile-shot-down-ukrainian-plane-western-leaders-declare/articleshow/73182023.cms