YELLOWSTONE NATIONAL PARK, Wyo. -

Officials investigating the death of a Yellowstone National Park employee say the woman died by suicide.
    
Park officials say the body of the 21-year-old woman from Twin Bridges, Montana, was found Tuesday. She was a park concession employee who had missed shifts at work and failed to meet a family member on Monday afternoon.
    
Her body was found in the Old Faithful Lodge area.
    
Yellowstone officials released a statement Friday saying an autopsy determined the cause of death was suicide.