A 25 minute heist to steal £18,000 worth of fuel has been caught on CCTV.
Dyffryn service station in Ruthin is the latest victim of diesel theft with over 12,000 litres of fuel being stolen.
CCTV footage has been released of a six wheeler Renault truck at the pumps of the garage on Thursday, November 22, after 10pm.
The owner David Evans said: “The lorry must have had a pump on it, as they broke into the main fuel tank to get access so they could pull their hose through the tank to pump the fuel out.
“They were on the site for 25 minutes and took £18,000 worth of diesel at retail price which is 12,782 litres of fuel.”
The CCTV shows a person standing on the forecourt and a lorry arriving about 40 minutes later to illegally siphon the fuel.
“There were three people, one driving the truck and one in a car and one was floating about on the forecourt,” said Mr Evans.
“We found out very quickly as we have good monitoring services and equipment on site, so we found out the fuel was taken and ordered a new delivery that day.
“We are hoping more awareness of the theft will help, we hope to catch them as it has also happened down in South Wales as well,” he added.
People who illegally siphon fuel from cars can then either reuse it themselves or sell it at a cheaper price than filling station forecourts, pocketing the entire profit for themselves.
This criminal activity has increased by over 50 per cent since January 2009 according to figures reported by the RAC.
A spokesman from North Wales Police said: "We're appealing to anyone who may have seen someone acting suspiciously on the forecourt of the petrol station on Denbigh Road."
North Wales Police said anyone with information should call 101.