Car owners in Donington are being warned after a report of catalytic converters being stolen in the village.
Police believe that thieves have targeted Honda Accord models registered between 1998 and 2004.
There have been reports of similar thefts across Lincolnshire, including Horncastle, Coningsby, Stickney, Skegness and Barrowby.
Lincolnshire Police’s crime reduction officer Sally Picker said: “This is a problem across the whole county and a huge amount of work is already being done to catch the criminals involved through Operation Brompton, which tackles all metal theft.
“It is hoped that catalytic converter marking kits will prevent further crimes and also improve the chances of securing convictions when offenders are arrested.
“All you have to do is put a coded sticker on your catalytic converter and coat it with a tube of the liquid provided to create a permanent mark.
“You then register your code on the International Security Register (ISR), run by Retainagroup that produces the marking packs, which means that when we recover catalytic converters, the marked ones tell us that a crime has been committed and the ISR leads us straight to the victim.
“Meanwhile, the prevention side comes in with stickers that you display on your car, advertising the fact that your converter is marked – putting criminals off.”
Anyone with information should call 101, quoting incident 39 of May 1.
You can also call Crimestoppers, anonymously, on 0800 555 111.