Firefighters are still working to suppress a 200-acre grass fire near Gunsight Pass that was reported Dec. 8, authorities said.
The fire, located 15 miles east of Green Valley, in the Santa Rita Mountains, is 50 percent contained, U.S. Forest Service spokeswoman, D. Giselle Koehn said Thursday.
Authorities have determined that the fire was human caused.
A helicopter is assisting the four hand crews, four engines and other fire support that are actively fighting the fire.
The forest service is optimistic the crews will continue to make good progress, Koehn said.
One hundred firefighters from Arizona State Forestry, Tubac Fire Department, Sonoita Fire Department, Green Valley Fire Department and the Coronado National Forest will continue suppression efforts Friday.
At this point, no structures are currently threatened. The fire is under investigation.
