Cooler weather helps, but Los Angeles fires still out of control

Around 173 square miles (450 square kilometers) have been torched in the three fires, which have destroyed dozens of homes and forced hundreds of families to flee.

One woman whose home was leveled by the fast-moving Line Fire northeast of the city said she and her children had only minutes to evacuate.

"It happened really fast," Brooke Palenchar told broadcaster KTLA.

"We weren't able to grab much before we left... I have about three Tupperwares left of our lives."

Footage from the home showed only a brick chimney standing among twisted metal and charred debris.

Investigators believe the , which has consumed 37,000 acres (15,000 hectares) in a week, was started deliberately.

Justin Wayne Halstenberg, 34, from Norco has been arrested on suspicion of arson. Reports Thursday said detectives believe he may be a serial arsonist.

Thousands of firefighters from across the region are tackling the vast fire, working long, intense days.

"Our shifts are 24 hours, but due to the crew rotation, we end up working about 28-hour shifts," Captain Kyle Arledge of Ventura County Fire said.

Three huge blazes are burning in hills around Los Angeles.

The Bridge Fire has torn through Wrightwood, destroying a number of homes and forcing evacuations.

A house is threatened as the Airport Fire gains ground near Lake Elsinore.

The town of Wrightwood has been badly affected by one of three major wildfires around Los Angeles.