On Monday (30) at 5.54am, one crew from Dogsthorpe and one crew from Stanground were called to a building fire on Brassey Close, Peterborough.
Firefighters arrived to find a fire at a large portacabin. Using breathing apparatus and two hose reels, crews extinguished the fire and used positive pressure ventilation to clear the smoke.
The crews returned to their stations by 8am.
The cause of the fire was deliberate.