A fire near the Grand Canyon National Park in Arizona has grown more than 20 times in size in 24 hours as an intensifying wildfire season sees the return of Canadian wildfire smoke into the U.S.

Two wildfires are burning at or near the North Rim, known as the White Sage Fire and the Dragon Bravo fire. The latter is the one that impacted the lodge and other structures. The park initially managed it as a controlled burn but then shifted to suppression as it rapidly grew, fire officials said.

A wildfire burning in Grand Canyon National Park triggered a chlorine gas leak Friday afternoon after flames reached a water treatment facility.

The White Sage Fire was burning in Arizona bout 15 miles southeast of Fredonia in Coconino County and north of the Grand Canyon State Park.

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A 67-year-old man from Texas has died while hiking the Grand Canyon, according to park rangers who are warning of extreme heat.

Hantavirus is primarily spread by deer mice, which are prevalent in the Grand Canyon area. The virus can cause a host of serious, even fatal, illnesses such as hantavirus pulmonary syndrome (HPS) and hemorrhagic fever with renal syndrome (HFRS), according to the Centers for Disease Control and Prevention ( CDC ).