Two hikers injured in US bear attack on Yellowstone trail

National park closes areas near Old Faithful after attack by one or more bears, with incident under investigation

Two hikers were injured in a bear attack on Monday on a trail in Yellowstone national park, park officials said.

The National Park Service said in a statement on Tuesday that the hikers sustained injuries on Monday by one or more bears" on the Mystic Falls trail near Old Faithful in Yellowstone national park. Officials did not specify which species of bear.