LATEST UPDATE: Fish, Wildlife and Parks officials tell NBC Montana they are investigating a bear attack in the Centennial Mountains, east of Dillon. A bear specialist, local wardens, the U.S. Forest Service and U.S. Fish and Wildlife are currently on the scene.

FWP officials say the group is looking for evidence of the attack, such as hair, tracks, blood, clothing, or the bear itself.

According to FWP officials, a father and son were hunting black bear in the Centennial Mountains. Around 11 a.m. Sunday, the father found his 47-year-old son had been mauled by a bear. 

The father took the son out of the area to meet a Lima ambulance. The hunter was first taken to a hospital in Dillon, then transported to a hospital in Seattle to be treated for serious injuries.

FWP officials say they had a brief interview with the father and the Dillon hospital. The father is in Seattle with his son.

Officials don't know what species of bear attacked the hunter, nor how many bears there were.

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EARLIER ASSOCIATED PRESS STORY: A bear attacked a 47-year-old man while he was bear hunting over the weekend in southwestern Montana, and seriously injuring him.
    
The Beaverhead County sheriff's office says the Stevensville man and his father were hunting in the Centennial Valley when he was attacked by a bear Sunday afternoon. It's unknown whether the animal was a black bear or a grizzly.
    
Sheriff Jay Hansen says the man was stabilized at the hospital in Dillon before being flown to a Seattle hospital for treatment of serious injuries.
    
The man's name and information on his condition were not immediately released.
    
State Fish, Wildlife and Parks wardens are investigating.