YELLOWSTONE NATIONAL PARK, Wyo. (AP) — A Yellowstone National Park trail remained closed Wednesday after a possible grizzly bear attacked a hiker, leaving him with serious but non-life-threatening injuries.

The 29-year-old man suffered injuries to his chest and arm in Tuesday's attack on the Turbid Lake Trail northeast of Yellowstone Lake.

The man encountered the bear 2.5 miles (4 kilometers) into the backcountry and sprayed bear repellent as it began to attack, park officials said in a statement.

National Park Service medics walked out with the hiker. He was then taken to a park clinic and flown to a nearby hospital, where he was treated and released.

Park officials said Wednesday they had no more information, including the man's name and where he was from, but later found grizzly bea

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