San Dimas fire - A 5-acre brush blaze that broke early Wednesday morning about a half-mile north of Golden Hills Road and a quarter-of-a-mile away from a residential area in La Verne, is almost contained officials said.

Lt. Andy Berg with the Los Angeles County Sheriff's Department said crews responded to the site around 4 a.m. following 911 calls from residents reporting the San Dimas fire saying they smelled smoke in the area.

Approximately 220 Los Angeles County firefighters aided by four water-dropping helicopters reportedly worked to completely extinguish the two-alarm fire on Terrebonne Avenue near the San Dimas Canyon Golf Course.

By 5:30 a.m., the San Dimas fire was burning uphill and consumed around five acres of medium to heavy brush on extremely steep terrain, Los Angeles County Fire Department Supervisor Michael Pittman told My FOX LA. The blaze is said to have then progressed to nearly 9 acres.

Three water-dropping helicopters were initially deployed to the scene before dawn, and a fourth one followed later.

The San Dimas fire reportedly did not spread further and no homes were immediately threatened.

By around 7 a.m., firefighters reportedly had taken control over the San Dimas fire, at about 10:30 a.m., the blaze was 65% contained and by mid-day, containment was 90%.

Complete containment is said to be expected before nightfall.

"All the flames have been pretty much knocked down, it's just hot spots," county fire Inspector Scott Miller told the Los Angeles Times. "The 65% containment, it's putting hose lines completely around the fire. It's contained, it's just not 100% contained."

National Weather Service meteorologist Rich Thompson, said the conditions in the area were favorable for firefighters as temperatures were in the low 60s with 50% to 60% relative humidity.

"It's timing itself pretty well," Thompson said of the San Dimas fire.

No significant wind gusts have also been reported.

"We didn't have much wind when it broke out," Los Angeles County Fire Inspector Keith Mora told NBC Los Angeles. "We're just dealing with really light winds."

Details as to how the San Dimas fire started were not immediately available.