At 8.25pm on Thursday (21) one crew from Littleport was called to a fire at Parsons Lane, Littleport.
The crew arrived to find a fire involving play equipment. Firefighters used a hose reel to extinguish the fire and returned to their station by 9pm.
The cause of the fire was deliberate. Anyone with information should contact police on 101 or Crimestoppers on 0800 555111.