Authorities are continuing to search for the person or persons responsible for the shooting of a popular white wolf in Yellowstone National Park earlier this year.

Hikers discovered the mortally wounded Canyon Pack alpha female wolf on April 11 inside the park near Gardiner, Montana, and had to euthanize her due to her severe injuries. National Park Service law enforcement believes the wolf was shot on the north side of the park near Gardiner, or near the Old Yellowstone Trail which is located in the park on the northern boundary. The incident likely occurred sometime between 1 a.m. April 10 and 2 p.m. April 11.

This wolf was one of three known white wolves in the park. She was one of the most recognizable wolves and sought after by visitors to view and photograph. A reward of up to $25,000 is being offered in the case of a conviction of those responsible.

Here's Senior Wildlife Biologist Doug Smith, talking more about the wolf. The video is courtesy of the U.S. National Park Service, Yellowstone National Park, via Facebook.

If you have information,  you can contact the National Park Service Investigative Services Branch (ISB). Your tips can be confidential.

CALL the ISB Tip Line 888-653-0009
TEXT to 202-379-4761
ONLINE www.nps.gov/isb and click "Submit a Tip"
EMAIL nps_isb@nps.gov
MESSAGE via Facebook @InvestigativeServicesNPS or Twitter @SpecialAgentNPS