Authorities in Montana hunted for the grizzly bear for three days after Leah Davis Lokan, a nurse from California, was attacked at her camp in Ovando

A grizzly bear that dragged a woman from her tent and killed her has been shot dead in Montana.

Leah Davis Lokan, a nurse from California, was on a mountain biking trip with two friends when the bear attacked their camp in Ovando in the early hours of Tuesday.