Canadian Prime Minister, Justin Trudeau has revealed that 63 citizens were on board the plane that crashed in Iran.
All 176 passengers the Flight 752 Kyiv-bound have been confirmed dead.
138 of them were supposed to catch connecting flights to Canada, Trudeau said.
Others killed include 82 Iranians, 10 Swedish, 4 Afghan, 3 German and 3 British nationals.
There were 11 Ukrainians on the flight – 2 passengers and the crew of 9.
“On behalf of all Canadians, I want to express my deepest condolences to those who are mourning the loss of a loved one. Your loss is indescribable and this is a heartbreaking tragedy,” Trudeau said at a press conference in Ottawa.
The Boeing-737-800 went down near an airport in the capital, Tehran, on Wednesday.
The aircraft belonging to Ukraine International Airlines lost contact just after take-off from Iran’s Imam Khomeini airport.
The crash happened early hours after Iran launched a ballistic missile attack on two Iraqi bases housing United States soldiers.
Ukrainian and Iranian officials have both said a mechanical issue likely caused the crash.
US Secretary of State, Mike Pompeo, said his country was ready to assist in an investigation into the accident.