Catching California arsonists is daunting task

By Jill Serjeant

LOS ANGELES (Reuters) - When a wildfire burns through tens of thousands of acres of California brush, tracking a suspected arsonist sounds like a classic case of looking for the needle in the haystack.

But arson investigators at work on Friday in 28,000 acres

of blackened canyon country in Southern California are using skills ranging from sifting through dirt on their knees to studying burn patterns on the tips of grass.

Authorities say they are convinced that the Santiago fire in the hills of Orange County -- one of about 20 blazes to ravage the state this week -- was deliberately set and have offered a $250,000 reward for finding the arsonist.

"It was not accidental by any means," Orange County Fire chief Chip Prather told reporters. "You would have to know what you are doing from a fire behavior standpoint, to take into consideration the direction of the wind blowing and the typography of the land to create a large-scale fire in a canyon like this."

Heavy on manpower and with daunting environmental variables, wildfire arson investigations can be a daunting task.

"It is a very difficult crime to investigate," said Rick Price, a retired arson investigator with the Los Angeles City Fire department. He said only a small percentage of California's perennial wildfires were due to arson.

The first priority is determining where a wildfire started. They usually burn outward in a V- or U-shape, so the search for the sources starts at the widest part and moves backward, according to www.interfire.org, an online resource for insurers and investigators.