The investigation also noted that the response to the second fire was slower, allowing it to rapidly evolve into one of California's most destructive wildfires.
Adding to the financial strain, unexpected payouts from personal injury lawsuit judgments against the city pushed Los Angeles close to a financial breaking point.
So far, 70,000 residents have been ordered to evacuate their homes, with the blaze already being labeled the most destructive wildfire in the city's history in just 24 hours.
Firefighters are working tirelessly to contain the blaze, deploying water drops from aircraft to protect surrounding neighborhoods and prevent further devastation.