Crews were battling a wildfire in Garden Canyon in the Huachuca Mountains on Monday. The Brown Fire began Sunday on the north side of the mountains.

Here are more details on the fire, according to the Coronado National Forest:

Size: 96 acres as of Monday evening.

Cause: Human-caused, under investigation.

Containment: Zero percent.

Who’s fighting it: About 50 firefighters on the ground. Also being used were three air tankers, including a large DC-10 air tanker, and three helicopters.

Structures threatened: None.

Fuels burning: The fire is burning in higher-elevation brush and timber.

“The strategy for this operation period is to stop and hold the fire at ridgetops, and burn out below them, to prevent further fire spread,” said a U.S. Forest Service news release.