Reward Increased For Arrest Of Arsonist

California - As flames roared through the canyons of Southern California, authorities tripled the reward to $300,000 Friday for the arrest of the arsonist responsible for the deaths of four firefighters in the nation's worst such tragedy in five years.

The wind-whipped, 24,000-acre wildfire pushed through uninhabited land about 90 miles east of Los Angeles after forcing people out of a few mobile homes overnight. About 10 structures, including homes, were destroyed on Thursday.

Investigators have not said how they know the blaze was arson, how it was set, or why. But they said those responsible could face murder charges.

Two young men were seen leaving the area where the fire broke out about 1 a.m. Thursday. Also, investigators said they were looking into whether the wildfire was related to other blazes in recent months, including a canyon fire last weekend.