The FBI served warrants at multiple locations in San Bernardino County, including a county supervisor's home and a residence in Ontario.
The man accused of starting the massive fire that destroyed a sprawling warehouse in Ontario, causing an estimated $500 million in damage, pleaded not guilty to charges in court Monday.
The Ontario Mills mall closed down Friday after multiple fires were reported across several stores, and a suspected arsonist arrested.
Prosecutors revealed new details about an arson suspect and the massive fire he is accused of starting at a sprawling warehouse in Ontario.
A warehouse employee arrested on suspicion of starting a massive fire that destroyed the building in Ontario, has been charged with felony arson.
New video may offer insight into a motive behind the alleged arson fire that destroyed a massive warehouse in Ontario.