Firefighting grizzly bears are dying after getting tangled in brush, a firefighting department said Monday.

In a statement, the Oregon Forest Service said the bear, a female, had been spotted in a dense brush section of the Tualatin National Forest in northern Oregon.

The bear was killed in the area on Monday afternoon, according to the statement.

The Forest Service is investigating.

The Forest Service says bears are typically found in brush near streams and streams, rivers, and lakes.

They also frequent the nearby Tualati Wilderness, where they are often found in burrows and tunnels.