A farm shed in Tintagel storing a trailer and straw is believed to have been deliberately set on fire.
Last Wednesday evening (April 19), just past 6pm, the fire service was called with reports of a fire in an agricultural building in Tintagel.
Fire engines and crews from Wadebridge, Bodmin and Delabole were sent.
Since there are limited water supplies in the area, the water carrier from Wadebridge was also mobilised.
When the crews arrived, they found a trailer and straw bales on fire inside a 10 x 10 metre farm shed.
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Two firefighters in breathing apparatus used two main jets to extinguish the fire while a local farmer helped with their telehandler.
The fire service believes that the fire was started on purpose.
A spokesperson for Cornwall Fire and Rescue Service said: "The fire was believed to be arson. Devon and Cornwall Police have been made aware."
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