Police are appealing for information after two lorries were damaged while parked in a hauliers yard in Ironville.
The incident happened at JB Transport, Old Stone Bridge, sometime overnight between Thursday, May 22 and Friday, May 23.
A windscreen and beacon light on one vehicle was smashed and a beacon light on another lorry was also damaged.
It is believed the vehicles may have been damaged by stones which had been thrown into the yard.
Anyone with information should contact Derbyshire police on 101, or call Crimestoppers anonymously on 0800 555 111.