At 7.35pm on Tuesday (31) one crew from March was called to a fire on Coleseed Road in March.
Firefighters arrived to find a caravan well alight and extinguished it using hose reels. They returned to their station by 9.05pm.
The cause of the fire was deliberate. Anyone with information should contact police on 101 or Crimestoppers on 0800 555111.