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Interior Director Ryan Zinke meets with Grand Canyon Superintendent Chris Lehnertz Sept. 22 at the Grand Canyon. Lehnertz is being investigated for undisclosed allegations.

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Grand Canyon chief being investigated, will be reassigned

FLAGSTAFF, Ariz. (AP) — The superintendent at the Grand Canyon will be reassigned amid a federal investigation into undisclosed allegations, the National Park Service said Tuesday, marking the latest upheaval at one of the country's most popular national parks.