Los Angeles burglary suspect disguised as firefighter, as looting arrests reach about 29 people: sheriff

"There were three individuals in a vehicle. They were stopped. They were where they weren't supposed to be. One had on a fire jacket and a fire hat. And he was additionally arrested for impersonating a firefighter," McDonald said. "We have people who will go to all ends to be able to do what it is they want to do to exploit the victims of this tragedy." 

He also said there was a threat from downed power lines and toxic materials from burned plastics and other composite materials. The chief warned people looking to donate to victims to take caution and research charities to verify their legitimacy. 

"I look forward to welcoming President-elect Trump to our communities so he can see the desperate need, but also the incredible opportunity, hope and perseverance of our impacted neighbors. It is in seeing this hope that I am confident that our communities will recover and rebuild," she said. 

Barger and Los Angeles Mayor Karen Bass said they both have been engaged in communication with high-level officials in the incoming administration, rejecting suggestions from a reporter who claimed there was any animosity.