Arsonists set fire to several vehicles in Whittlesey over the weekend.
Crews from Thorney and Stanground were called to the blaze on Crease Bank at 11.19pm on Saturday September 23.
Firefighters arrived to find a well-developed fire involving several vehicles.
Wearing breathing apparatus, they extinguished the fire using hose reels and returned to their stations 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.
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