Around 40 firefighters spent three-and-a-half hours tackling several blazes at an industrial estate in Derbyshire.
Seven heavy-goods vehicles are believed to have been destroyed in the fire at Heanor Gate Industrial Estate last night.
Crews were called out from across the county to the incident at 8.30pm. They left the scene at midnight.
A spokesman for the fire service said police were called to the fire and an investigation into the cause has begun.
Nobody was injured in the incident.