A big grizzly bear attacked a backcountry guide from Montana, who was fishing on a river near Yellowstone National Park.
Charles Carl Mock, 40, who lived in the park gateway community of West Yellowstone, died Saturday or two days after he was attacked, Fox News reported.
Authorities believed that the grizzly bear is trying to protect a nearby moose carcass found 45 meters from the site of the attack.
According to the Associated Press, the Yellowstone region of Montana, Idaho, and Wyoming is home to more than 700 bears. The attack follows the increase of the grizzly population, with more people moving into rural areas near the bear habitat.