According to reports, the flight was on its way from  Diavik diamond mine when the mishap happened close to Fort Smith, Northwest Territories, Canada.

The cause of the crash is still not known.

Chief coroner of Northwest Territories Garth Eggenberger confirmed the fatality in a statement and said investigation into the incident is underway.

Northwest Territories Premier RJ Simpson condoled the loss of lives in the incident.

He said in a statement: "It is with a heavy heart that I express my deepest condolences to the families, friends, and loved ones of those who were aboard the Northwestern Air flight that crashed outside of Fort Smith today."

"The impact of this incident is felt across the territory. The people we lost were not just passengers on a flight; they were neighbours, colleagues, friends, and loved ones. Their stories and contributions to our communities will not be forgotten," he said.

Rio Tinto Chief Executive, Jakob Stausholm said: “I would like to extend our deepest sympathy to the families, friends, and loved ones of those who have been affected by this tragedy. As a company we are absolutely devastated by this news and offering our full support to our people and the community who are grieving today."