The two backpackers in Canada's Banff National Park seem to have emptied a can of bear spray, trying to get the animal to leave their camp. When rescuers arrived, the bear charged at them.

Authorities received a GPS alert of a bear attack, and once on the scene, found two deceased individuals and an aggressive bear.

The woman's body was found about eight miles outside the town of West Yellowstone, Mont., a gateway community that borders Yellowstone National Park.