A greater alarm fire burned just under 5 acres of brush in Highland Park Friday night before being contained. 

The fire began around 9:51 p.m. at 368 S. Avenue 60 near the 110 Parkway, initially burning at least 1 acre of medium to heavy brush in steep terrain before growing to just under 5 acres, said Los Angeles Fire Department spokesman Nicholas Prange.

Water-dropping helicopters assisted ground crews who worked the hillside blaze with hose lines and hand tools. 

It took 96 firefighters an hour and 17 minutes to contain the fire, Prange said.

Firefighters will remain at the scene for an unknown period of time to ensure any remaining hot spots and smoldering debris are fully extinguished. 

Prange said no injuries were reported and the cause of the fire is under investigation.