The cause of the California mountain fire is identified? Or it is ignited by the power company cable failure.

The cause of the California mountain fire is identified? Or it is ignited by the power company cable failure.: California mountain fires continue to spread, killing 31 people and 228 missing, making it the most destructive mountain fire in American history. An investigation into the cause of the fire was also underway, and an American power company entered the field of investigation.