The so-called Land Fire was reported shortly after 1 p.m. in light-to-medium brush near the 10000 block of North Sunland Way, according to the Los Angeles Fire Department. It was initially reported as a 5-acre blaze.
LAFD reported the blaze grew to 107 acres by 4 p.m. Los Angeles County Fire Department and Burbank Fire Department firefighters were called in to assist the LAFD in battling the fire, and progress was stopped by about 5:10 p.m., LAFD said.
Helicopters were seen performing water drops at the scene, where temperatures were in the low 80s amid 25% humidity. Containment Wednesday evening was at 40%.
No injuries or evacuation orders were immediately reported in connection with the fire, which was burning in a remote hillside area southwest of the 210 Freeway. LAFD added that no homes are currently threatened.
Firefighters were working to fully extinguish active hot spots near the perimeter and improving containment lines, according to Nicholas Prange of the LAFD.
The cause of the fire is unknown.
City News Service contributed to this report.