This story was updated to add new air quality map and information.

MALIBU, Calif. — Since Monday night, a fire in Malibu, California, has set more than 3,000 acres ablaze and forced thousands of residents to evacuate. The franklin fire has grown 39% over the course of 12 hours, according to CalFire. The cause of the wildfire is under investigation.

The Franklin fire has burned more than 3,893 acres, CalFire reported. Many towns in the area are under red-flag warnings, which means conditions could lead to especially dangerous wildfire growth, according to the National Weather Service. The fire has been fueled by a combination of Santa Ana winds and low humidity. As of Wednesday morning, Firefighters had contained 7% of the outbreak.

Los Angeles County is one of the areas under a red-flag warning, according to the National Weather Service. Areas such as Filmore and Santa Clarita are in "very extreme fire danger," USA TODAY reported.

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Road closures in Southern California

According to the California Department of Forestry and Fire Protection, the following roads are either fully or partially closed:

Malibu Canyon Road at Mulholland Highway to Pacific Coast Highway is fully closed.

Las Virgenes Road at Mulholland Highway to Pacific Coast Highway is fully closed.

Pacific Coast Highway is closed between Carbon Canyon and Corral Canyon Road. The road is only open to those actively evacuating the area.

Old Topanga Canyon Road at Mulholland Highway to Topanga Canyon Boulevard is mostly closed. The road is open to residents only.

In a statement shared on Tuesday, California Gov. Gavin Newsom's office said the state has secured federal assistance to support the fire response.

"Fire officials and first responders are working relentlessly to protect lives and property from the Franklin fire," Newsom said. "California is grateful for this federal support, which bolsters these efforts. I urge all residents in affected areas to stay alert and follow evacuation orders."

Mandatory evacuations

The city of Malibu has multiple mandatory evacuations in place. Firefighters and sheriff's deputies have gone door-to-door to evacuate residents, officials said.

Sheriff Robert Luna said Tuesday during a news briefing that more than 8,000 structures are within the affected zone. Of those, more than 2,000 are under mandatory evacuation orders and roughly another 6,000 were under evacuation warnings.

The following areas are under mandatory evacuation, according to the city:

East of Latigo Canyon

West of Topanga Beach Driveway

South of Baller Motorway, including the Big Rock and Las Flores Communities

Destruction near Pepperdine University campus

The Franklin fire scorched land near Pepperdine University on Monday night and Tuesday, causing a shelter in place order for students.

The order was lifted Wednesday morning and power has been restored to the Malibu campus, according to Pepperdine University's website. There have been no reported injuries or significant damage to structures on campus.

Air quality in Southern California

The South Coast Air Quality Management District issued a wildfire smoke advisory until Wednesday afternoon.

"Santa Ana winds will continue through Wednesday morning stirring up high levels of dust in many areas throughout the county," the Ventura County Air Pollution Control District reported. Air quality could reach or exceed unhealthy levels for sensitive groups for several hours in areas directly impacted by dust.

For those sensitive to dust and smoke, snug-fitting N95 respirator masks have filters designed to block the tiny particles. For more information and tips, go to vcapcd.org or airnow.gov.