The National Park Service says it will reassign the Grand Canyon superintendent amid a federal investigation into undisclosed allegations.
Investigators from the Interior Department's Office of Inspector General arrived at the park this week.
Park spokeswoman Vanessa Lacayo says the allegations involve Grand Canyon superintendent Christine Lehnertz but would not elaborate.
She says Lehnertz will be reassigned outside Grand Canyon to protect the integrity of the investigation. She's currently on leave.
OIG spokeswoman Nancy DiPaolo would not say what led to the investigation or when it might be complete.
Lehnertz is a trained environmental biologist who has been with the Park Service for more than 10 years.
She started at Grand Canyon in August 2016 after a sexual harassment scandal that led to the retirement of the park's former chief.