At 9.07pm on Tuesday (31) one crew from Ramsey was called to a fire on High Street in Ramsey.
Firefighters arrived to find an unattended bonfire and extinguished it using a hose reel. They returned to their station by 10.05pm.
The cause of the fire is believed to be deliberate. Anyone with information should contact police by visiting www.cambs.police.uk to submit an online report or call Crimestoppers on 0800 555111.