At 11.04pm on Thursday (28) one crew from Dogsthorpe was called to a fire on Oxney Road in Eastfield, Peterborough.
Firefighters arrived to find a mini bus well alight. Wearing breathing apparatus they extinguished the fire using a hose reel and returned to their station by 12.15am.
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.