BROOKLYN - The FDNY was called in to quell a rooftop fire sparked by a barbecue Saturday morning.

The fire started atop a building with residential homes and businesses on 38th Street at around 11:30 a.m., causing everyone inside to evacuate.

The fire chief says four firefighters suffered minor injuries while at the scene. He warns residents to avoid barbecues on combustible roofs.

The exact cause of the fire is under investigation.