California’s massive Silverado Fire was sparked by a half-burned cigarette butt which was thrown into dry brush, say firefighters

Two wildfires were approaching Orange County neighborhoods south of Los Angeles on Monday
An aerial view of the Silverado Fire in Orange County on Tuesday morning around 7am local time

The Silverado Fire in Irvine, California that has gravely injured two firefighters was started by a cigarette that was tossed onto dry brush, authorities said as state officials ordered 100,000 people to evacuate in Orange County. MORE