GRAND CANYON, Ariz. – A firefighter died Monday while battling the Dragon Bravo Fire near Grand Canyon National Park .

J. Hank Hester, 70, suffered a cardiac emergency as he supported hazard tree removal operations close to the North Rim Entrance Station, according to officials.

They noted that Hester was given immediate medical attention from line paramedics, but efforts to resuscitate the firefighter were unsuccessful.

Hester hailed from Priest River, Idaho , officials added.

"Our deepest condolences go out to the Hester family and friends during this very tragic time," said Incident Commander Matt Rau. "Hank is a member of our wildfire family and will be deeply missed."

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Officials said an investigation of the incident is being conducted by the National Park

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