Grizzly bear kills guide just outside Yellowstone National Park

A Montana backcountry guide has died after he was mauled by a large grizzly bear that was probably defending a nearby moose carcass just outside Yellowstone National Park, officials said Monday.

Charles "Carl" Mock, 40, who lived in the park gateway community of West Yellowstone, died Saturday, two days after he was attacked while fishing alone in a forested area along the Madison River several miles north of West Yellowstone, Gallatin County Sheriff's Office spokesperson Christine Koosman said. The male bear, which weighed at least 420 pounds, was later shot and killed when it charged wildlife workers investigating the attack, officials said in a statement.