Eight people were injured when a burger van exploded at a pony show in North Yorkshire on Monday.
It is understood two 19kg gas cylinders were involved in the fierce blaze at the Great Yorkshire Showground, in Harrogate, where the National Pony Society’s summer show was unfolding.
No-one suffered life-threatening injuries in the incident.
Four people were taken to hospital with burns. Four others were treated at the scene.
The Yorkshire Ambulance Service sent three ambulances to the late-morning incident.
Fire Crews from North Yorkshire Fire & Rescue dealt with the blaze, which they said involved two propane gas cylinders.
An investigation is under way into the cause.