Butte County Cal Fire investigators have released the cause of the 2017 Wall Fire that destroyed 41 homes and damaged three others in southeast Butte County. Investigators say the blaze was started by a defective electrical panel at a home on Chinese Wall Road north of Bangor. The Wall Fire was reported on July 7, 2017 at 2:52 p.m. It burned 6,033 acres and destroyed or damaged 57 structures before being contained more than a week later on July 15. "The Wall Fire was the first of four major destructive fires in Butte County in 2017," said Unit Chief David Hawks. "We hope valuable lessons were learned by this fire and remind residents to keep electrical and other ignition sources in good repair and clear of flammable materials and vegetation."