On Thursday (26) at 12.29am, one crew from Dogsthorpe was called to a bin fire at Flaxland, North Bretton.
Firefighters used a hose reel to extinguish the fire.
While in attendance, the crew discovered a second bin fire on Benland. Firefighters used a hose reel to extinguish the fire, which had caused damage to a nearby exterior door.
The crew returned to their station by 1.30am.
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.