Businesses are being urged to take precautions against fuel thefts as thieves continue to target industrial sites in the north of the county.
Officers are looking into a number of cases where thieves have siphoned large amounts of diesel and petrol from company vehicles that have been left out in the open.
Individual crimes are being reviewed to see if there is a connection between the offences.
Eight vehicles were targeted at the Lune Industrial Estate, Lancaster, in October last year, with more than £1,200 worth of fuel being stolen.
Sgt Simon Balderstone, of Lancaster and Morecambe’s serious acquisitive crime team, said: “Fuel theft can have a significant financial impact on a local business and can lead to vehicles being out of commission if a tank has been punctured or the vehicle damaged in some other way in order to get to the fuel.
“We would urge companies to park vehicles in locked garages when they are not in use so that it is difficult for thieves to get to them and to install good security lighting on their premises to deter criminals. Lockable fuel caps are also recommended.”
Anyone with information about fuel thefts should contact police on 101.