North Wales Police have warned people about what they say appears to be an emerging pattern of the theft of cooking oil, heating oil and fuel.
In a message which has gone out to the public through the force's Neighbourhood Alert network PCSO Lucy Green of Conwy and Denbigh Rural says: "Cooking oil is stolen from hotels, pubs, takeaways and cafes - due to the large quantities that these premises require on site.
"Remember, if you are the proprietor to one of these establishments you are entitled to request identification from anyone you do not believe to from a legitimate collection company. CCTV is an excellent deterrent and source of evidence.
"Heating oil is being removed from locations without the owners permissions.
"We are
encouraging those of you with tanks, to ensure they are locked and alarmed.
Owners are not realising these tanks have been drained until the heating in the
premises goes off unexpectedly."
She adds: "Fuel theft is often paired with a secondary crime of criminal damage. Criminals are targeting large vehicles, wagons and farm machinery. Please ensure you are securing your vehicles. This form of crime is on the rise within the UK.
"These thefts can be opportunistic thefts and planned operations too!
"Please ensure that you report any suspicious activity via 101, any vehicles or suspect descriptions that you may have.
"Refrain from sharing
immediately on social media, as this could hinder any investigations."