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.

Forty firefighters responded to a blaze near the LeFrak ice skating rink at about 2:40 p.m. and put out the flames by 3:22 p.m. An earlier fire nearby burned a 2-acre wooded area.

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.