PARK SLOPE - Firefighters finally extinguished some remaining hotspots at five-alarm fire in Park Slope Saturday.

Officials say the flames ignited at the Associated Supermarket on 5th Avenue just after noon on Friday. The fire burned for at least nine hours before firefighters put it out, and then a fire chief found burning embers Saturday morning.

The last embers were doused at 10:30 a.m.

The fire was originally classified as four-alarm, but upgraded to five-alarm on Saturday.

Deputy Chief Woods says 20 firefighters were injured in the blaze, eight of whom were taken to Lutheran Hospital for minor injuries. All of the injured are expected to be OK, he says.