At 9.04pm on Saturday (30) one crew from the Peterborough Volunteers Fire Brigade was called to a fire on Richmond Avenue in Walton, Peterborough.
Firefighters arrived to find a fire in a flat and extinguished it using a hose reel. They returned to their station by 10pm.
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.