An investigation is continuing into an overnight fire at a factory in the Pennyburn area of Derry.
The Northern Ireland Fire and Rescue service brought the fire under control before the structure was damaged.
A group of young teenagers were seen running from the site as the fire service arrived on scene.
Anyone with information is being asked to contact police at Strand Road.
In a statement, police say that in the middle of a pandemic, vital resources are being deployed to these incidents. Putting a strain on all Emergency Services and, had this been worse, the NHS.