A CARELESSLY discarded cigarette was the cause of a fire in Godmanchester last night. Firefighters were called to a track off Silver Street following reports of a horse box on fire at 9.55pm. Because of the difficulty getting the fire engine down the track, firefighters using an aqua pack, a backpack filled with water with a hose reel attached, to tackle the blaze. They returned to the station at 10.40pm. A Cambridgeshire Fire Service spokesman said: A cigarette can burn up to 920 degrees centigrade when being inhaled. If not stubbed out properly, it can easily start a fire either inside the home, or outside. Always make sure you extinguish each cigarette properly after it has been smoked.