Last Updated 4:01 p.m. ET
LOS ANGELES Detectives in Los Angeles spent early Sunday analyzing security video camera footage and following up on other leads after a half dozen more vehicles were set on fire on New Year's Eve, the latest rash of suspicious car fires in the city.
The outbreak of arson fires has left a trail of smoldering debris in Hollywood, West Hollywood, North Hollywood and the Fairfax district of Los Angeles since Thursday.
Authorities said they were investigating a total of 39 suspicious fires. Most of those fires were set in parked cars. In several cases, flames have jumped to carports and apartment units.
"They are working on hundreds of clues, interviewing dozens of witnesses, picking up countless pieces of evidence," police Cmdr. Andrew Smith said of the detectives.
Arsonist puts Los Angeles on edge for New Year's
Cops race to stop Hollywood-area arson car fires
Authorities haven't said how the car fires were sparked or what was collected at the crime scenes. They were unsure if the rash of fires were the work of one arsonist or multiple people or copycats.
There have been no injuries.
Extra patrols were out in force on New Year's Eve. One of Saturday's attacks occurred at the Hollywood and Highland entertainment complex, a popular tourist destination and hotspot for holiday revelers. Firefighters responded to a report of a small car fire in a parking structure that was out by the time they arrived.
Firefighters routinely are called to put out burning cars, but this recent spate has been unusual because of the frequency and location of the fires. Crews have been responding to other emergencies despite the focus on solving the fire arsons, fire spokesman Erik Scott said.
Police urged residents to check their cars for any signs of tampering and take simple precautions such as locking their cars, keeping the garage lights on at night and reporting suspicious activity.
2012 7:34 PM EST Insurance scam, or other real estate scam. SoCal has a long history of using fire to avoid and evade laws. I wouldn't be surprised if more than one or two of the buildings is the property of a single owner, or group of shareholders

The centers, operated by FEMA and the Massachusetts Emergency Management Agency, saw 1852 visitors. Counting auto, home and commercial claims overseen by the state, there were a total of 28500 insurance claims filed as a result of Irene.
Waterfront homeowners in Wading River accuse firefighters of destroying private property when they move fencing and signs on the beach on a call to extinguish a brush fire on the bluff. The homeowners and the town are in federal court over beach access
The two-page 'Newt Notes' analysis … continued: 'We agree entirely with Governor Romney and Massachusetts legislators that our goal should be 100% insurance coverage for all Americans.'” AND … FREEZE! You're Gingrich's spokesman. What do you say?
The federal floodplain insurance had denied repair costs for the Melrose Terrace apartments because the damage exceeded 50 percent of the property value, but zoning administrators in Brattleboro said that was not the case and appealed the decision.
I have been seeing a lot of questions on Facebook and hearing people ask questions on the radio about their losses. One question that kept coming up was, “Is there anyway to recoup the expense of the ruined food that I had to throw away?”
Since I know I threw out several hundreds of dollars worth of food myself, I figured this question would be one that many could use an answer to. I decided to reach out to my friend and insurance agent, Mary Benjamin of Roger Butler Insurance, for the answers.
I asked Mary about the the food loss as well as other homeowners insurance questions that might apply after a catastrophic weather event like the Blizzard of October in Westfield, MA.