Police are appealing for information after vehicles in a yard in Heather Road in Derry were damaged overnight.
A PSNI spokesperson said: “At around 10.30pm police received a report of a lorry on fire at the location.
“Substantial damage was caused to the DAF lorry as a result.
“Damage was also caused to a JCB front loader during the incident.
“Police are appealing for anyone who witnessed the incident, or anyone with any information that can assist with the investigation, to contact officers in Strand Road on 101, quoting reference number 1445 of 21/10/16.
“Information can also be passed anonymously via the independent charity Crimestoppers on 0800 555 111.”