PHOENIX (AP) – A federal review says unsafe work practices and the failure of supervisors to follow policies and oversee workers led to a wildlife biologist’s plague death.

The biologist, 37-year-old Eric York, died at Grand Canyon National Park last year.

A National Park Service report released Tuesday says York didn’t wear gloves or a protective respirator while handling and performing a necropsy on a mountain lion that had died of the plague.

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