Lake Fire firefighting cost estimated at $6.8 million

SAN BERNARDINO, Calif. (KABC) -- Cooler weather on Monday helped firefighters battling the Lake Fire, which has scorched at least 17,405 acres.

The brush fire, which erupted on Wednesday in the San Bernardino Mountains, was 24 percent contained as firefighters attacked the flames with a fleet of water-dropping aircraft.

"It's starting to behave itself a little bit, and we're catching up and getting around it," said Lee Beyer, a spokesman for crews fighting the fire.

Fire officials say most of the area has not burned in 100 years.

The National Weather Service in Oxnard said a high pressure system that pushed temperatures into the triple digits in Southern California over the weekend was drifting east, allowing a gradual cooling trend into the middle of the week.

The cause of the fire has not been determined. The estimated cost has reached $6.8 million.

No structures have been damaged or destroyed, and no injuries were reported.

The Associated Press contributed to this report.