NOGALES, Ariz., May 22 (UPI) -- A wildfire burning in the Coronado National Forest near Nogales, Ariz., has consumed 6,000 acres and is 15 percent contained, officials said Wednesday.
More than 200 personnel are battling the Soldier Basin Fire, east of Nogales International Airport. The fire was caused by human error Friday, the Nogales International reported Wednesday.
The area covered by the fire has grown significantly since Friday, doubling in size by Sunday, The Arizona Republic reported, and nearly doubling again by Wednesday.
"Area residents should expect to see continued fire growth and smoke," a U.S. Forest Service advisory warned.
The fire is burning grass and brush and no structures are immediately threatened, officials said, although they advised smoke could settle in valleys and other low-lying areas.