Drivers are being urged to be vigilant following a spate of catalytic converter thefts in the past three weeks.

Since 19 December, 14 vehicles parked on private driveways in King’s Lynn, Downham Market and surrounding villages have been targeted. Catalytic converters were removed from the vehicles, including nine from Ford Galaxy people carriers.

The cost of repairing the damage often runs into many thousands of pounds.

PC David Mallett, Downham Market safer neighbourhood team beat manager, said: “People should call the police if they witness anyone acting suspiciously around vehicles, particularly around vans and pick-up trucks.

“Private vehicles should be kept in a well-secured garage where possible, and if no garage is available, in a well-lit, public area.

“Vehicles can be parked in such a way as to make access to the catalytic converter difficult, or parallel with another vehicle if you own one. Commercial vehicles should also be kept in a locked building or compound.

“Mark your catalytic converter - etching the part and spraying with heat-resistant paint. Use alarms, lighting and CCTV to deter thieves.”

Anyone with information about the incidents should contact 101 or call Crimestoppers anonymously on 0800 555 111.