YELLOWSTONE NATIONAL PARK, Wyo. (AP) — The National Park Service says two people were treated for injuries after an encounter with a grizzly bear in Yellowstone National Park.

A group of four people was a few miles down a trail southwest of Canyon Village when they saw a young grizzly bear approaching about 11:30 Thursday morning. A sow grizzly then appeared at close range and charged the group. Two of the hikers discharged bear spray and the sow and cub left. The encounter lasted about a minute.

All four hiked out to the trailhead under their own power. One person was treated at the scene, while a second was taken to an area hospital with bite and claw wounds. All four have asked that their identities not be released.