On Saturday (29) at 6.18pm one crew from March was called to a fire in the open on City Road, March.
The crew arrived to find rubbish on fire. Firefighters extinguished the fire using one hose reel before returning to their station by 7pm.
The cause of the fire was deliberate. Anyone with information should contact police by visiting www.cambs.police.uk to submit an online report or call Crimestoppers on 0800 555111