About 100 firefighters were called to put out a two-acre brush fire in a heavily wooded section of Prospect Park in Brooklyn on Friday night, prompting officials to warn residents to stay away as they used drones to identify hot spots.

A brush fire broke out in Brooklyn’s historic Prospect Park on Friday night amid a drought across the northeast. A passerby reported the fire at about 6:40 p.m., and firefighters battled the blaze for more than three hours,

The fire was in an “extremely dense” part of Prospect Park on a hill, and there were no structures nearby to be threatened, an FDNY official said.