Colorado Parks and Wildlife said the death of a female gray wolf last weekend in Rocky Mountain National Park is currently under investigation.

Colorado Parks and Wildlife biologists confirmed that the death of a female gray wolf occurred in Rocky Mountain National Park on Sunday, April 20.  The U.S Fish and Wildlife Service is investigating the mortality

A collared gray wolf released in Colorado in January as part of the state’s historic reintroduction effort died in Rocky Mountain National Park this week, wildlife officials said Thursday.