ESSEX Firefighters were called to a fire involving a large barn, measuring 15m x 30m, and three vehicles on River View in Chadwell St Mary.
On arrival crews reported the barn was 20 percent alight.
Crews wearing breathing apparatus used three hose reel jets to extinguish the fire by 01:51hrs. Crews remained at the scene for a further 30 minutes turning over and damping down.
A joint fire service and police investigation will be carrried out to establish the cause.