Firefighters continues to battle a wildfire that has been burning in the Coronando National Forest.Spokesman Gerry Perry said the Chino Fire has charred over 50 acres but is now more than 50 percent contained since being spotted on Tuesday. Perry said it is still not clear what ignited the blaze.
"The fire started in Mexico of unknown causes and moved north across the border onto the Coronado National Forest," Perry said.
The fire is about seven miles west of Nogales, a city that recently saw more than 10,000 acres burn in a separate wildfire in late May.