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Fire crews south of LaJunta are getting the upper hand on a grassland wildfire near the Otero County line.

Lighting apparently sparked the blaze Monday night. It's since burned approximately 400 acres.

Forest Service spokeswoman Barbara Timock says flames no longer threaten structures on the historic Rourke Ranch, which was earlier
threatened by the fire.

But officials are concerned about the possibility of more lightning strikes in the area today.

About 75 firefighters from the San Isabel National Forest and El Paso County are battling the blaze.

Full containment is expected by morning.