Cambridgeshire Fire and Rescue Service were called to an old mushroom farm, in Station Road, just after 4pm yesterday (Monday). Firefighters wearing breathing apparatus, along with a specialist appliance and water shuttle were sent to extinguish the fire. Station commander Gavin Hammond said the cause was arson and warned: Deliberate fires put lives at risk. Crews returned to their stations at about 9.21pm, with some visiting the building this morning (Tuesday) to inspect the scene. A spokesman for the fire service added that crews from Ramsey, Stanground, Dogsthorpe and Whittlesey were called to the incident.