The police said on Saturday that the structure, a tourist attraction for decades, was probably not salvageable. A man was arrested in connection with the blaze.

Smoke from the blazes, blamed on destructive agricultural practices, has sickened hundreds of thousands and blanketed neighboring countries.

Prime Minister Mark Carney said the “violent, fast-moving” fire on Saturday in Alberta was one of the worst tragedies for Canada’s armed forces in peacetime on Canadian soil.

The defense minister said people were killed and injured at a base in Alberta, but officials did not offer details on the cause.

Le Marché des Enfants Rouges, which opened in 1615 as a vibrant food hall, was a fixture for chefs, cooks and tourists.

Our reporter, John Branch, joined a team installing cameras in the Sierra Nevada for detecting wildfires. Artificial intelligence is used to sift through images from the network, helping firefighters identify and respond to early to signs of wildfires.