Fire detected in Superior National Forest believed to be caused by lightning

SUPERIOR NATIONAL FOREST, Minn. -- U.S. Forest Service officials say they've detected a three-acre fire inside the Superior National Forest in northern Minnesota.

According to officials, the fire - called the August Lake Fire - is located about 15 miles southeast of Ely by August and Heart lakes. The fire was first detected Monday from a plane. The fire is burning in heavy vegetation with difficult access.

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The initial cause of the fire is believed to be lightning.

As of Tuesday, the fire is "creeping on the ground with 1-2 foot flame lengths," officials said.

Responders to the fire are using both aerial and ground suppression tactics.