Devon & Cornwall Police has launched an investigation after thieves stole around £30,000 worth of fuel from a business in Launceston.
The business, which is on Pennygillam Industrial Estate, was targeted between 1am and 2.30am on Tuesday 5 April.
Officers are carrying out enquiries and have asked anyone with information to come forward, especially those who have CCTV and who live around Pennygillam Industrial Estate.
PC Chris Collins said: “We are asking the public to be vigilant following a slight increase of fuel thefts over recent months, with both commercial and domestic settings being targeted.
“If you have a fuel tank - either domestic, agricultural or commercial - please review its security. Is it locked/alarmed? Is there security lighting/CCTV?
“Offenders will often use curtain-sided vehicles or commercial vans to carry large containers for these offences. If you see these types of vehicles acting suspiciously, especially under cover of darkness, please report it to the police including as much detail of those involved as possible.