The fire started around 8:45 p.m. and was placed under control just before 11 p.m.
Ten different fire departments responded to the scene.
Two injured firefighters were sent to Stony Brook Hospital. In addition, one injured civilian went to Southside Hospital.
The injuries do not appear to be life threatening.
CLICK HERE TO SEE PHOTOS OF THE CENTRAL ISLIP FIRE
---
WAKE UP WITH EYEWITNESS NEWS! Click here to download the WABC Eyewitness News Alarm Clock app from iTunes. or search WABC or 7online in the app store.