Lytton endured highs of 49.6 C on Tuesday, the day before 1,000 residents from the area were forced to flee their homes because of the encroaching flames.
A couple in their 60s who took cover from the fire died after a power pole collapsed and fell onto them, according to the Vancouver Sun.
By Thursday afternoon, most homes and buildings in Lytton were ruined, said Mike Farnworth, British Columbia’s safety minister.
The British Columbia Wildfire Service reported that the Lytton wildfire was burning out of control over an area of approximately 30 square miles.
Referring to the damage wrought by the flames, John Haugen, acting chief of Lytton First Nation, said: “It was like a war zone last night.”
The wildfires were sparked by an unprecedented heatwave across western Canada and the US, which is believed to have killed hundreds of people in British Columbia and the American states of Oregon and Washington.