Fire crews fully contained a brush fire burning north of Anthem near Interstate 17 and Circle Mountain Road Monday afternoon.
The Daisy Mountain Fire Department said a power transformer may have caused the fire, which grew to 25 acres before it was fully contained.
The Phoenix Fire Department said the fast-moving fire started around 3:15 p.m. It jumped Circle Mountain Road and grew to 10 acres before 5 p.m.
Firefighters put crews in place to protect the homes in the area. No structures were damaged.
