Image caption Mountain goats usually stand about 3ft (0.9m) tall at the shoulder and can weigh up to 300lbs (136kg)

A hiker has died after being attacked by a mountain goat in the US state of Washington, officials have said.

Robert Boardman was gored in the leg by the goat while out walking on Saturday with his wife and a friend on Klahhane Ridge in Olympic National Park.

The 63-year-old was transported by US Coast Guard helicopter to a hospital in Port Angeles, where he was pronounced dead.

Rangers later killed the goat, which was known for its aggressive behaviour.

Barb Maynes, park spokeswoman, told the Peninsula Daily News that in the past rangers had tried "hazing" the animal - inducing it to be frightened of people - by shooting it with bean bags and throwing rocks.

But there had been no reports of any incidents which would have warranted killing the goat, she added.

Witnesses said Mr Boardman, his wife and friend had stopped for lunch on Klahhane Ridge when the goat appeared and moved towards them.

Mr Boardman tried to shoo the animal away but it instead attacked him. After goring the hiker the goat stood over him, and had to be pelted with rocks by a ranger before finally moving away.

Some 300 mountain goats live in Olympic National Park. Found only in North America, they usually stand about 3ft (0.9m) at the shoulder and can weigh up to 300lbs (136kg).