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CHEYENNE, Wyo. (AP) — Firefighters are making progress in trying to stop a fire near Glendo State Park in southeast Wyoming.

The Sawmill Fire started Saturday on a Wyoming National Guard training area. It has burned about 12 square miles of timber and grass and is 30 percent contained. The cause of the fire is under investigation.

The east side of Glendo State Park is closed as a precaution but the west side remains open.

Meantime, authorities in Grand Teton National Park now say lightning started a small wildfire last week on the west side of Cody Peak.

Firefighters found an illegal campfire ring in the burned area Thursday and originally suspected the fire was human-caused.

It was one of several fires sparked by lightning across Wyoming that day.