A bungalow was set alight in March on Saturday afternoon, sparking an investigation by Cambridgeshire Police.
Firefighters from March, Wisbech and Manea were called to the Cavalry Drive home on October 6 at 3.59pm.
A spokesman for Cambridgeshire Fire and Rescue said: “One crew from Wisbech, one crew from March and one crew from Manea were called to a bungalow fire on Cavalry Drive, March.
“Wearing breathing apparatus, firefighters used a jet and hose reel to extinguish the fire, before returning to their stations by 6.10pm.
“All persons were accounted for. 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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