Fire fighters in Londonderry were today treating fires which gutted two portable cabins and car as arson.
At around 11pm yesterday, two appliances from Northland Road were dispatched to Bay Road industrial estate.
On arrival they discovered two adjoined cabins well alight and in danger of spreading to nearby buildings.
Northland Road acting watch commander Kevin Chester said fire fighters spent three hours at the scene trying to bring the blaze under control.
He said: "Half of the cabins were destroyed. We believe these cabins have not been used for some years.
"We are led to believe this was arson and after the fire was out we had to check to make sure no-one was caught in it.
"Starting fires at places like this is very dangerous."
As fire fighters brought the blaze under control, their Northland Road colleagues were alerted to a car fire about a mile away in the Carnhill estate.
The vehicle was gutted in the blaze, believed to have been started at around 1.30am.
Fire fighters and police are also treating this incident as arson.