Catalytic converters have been stolen from three Mercedes vans in Stevenage, with police urging the public to be vigilant.

Two vans parked in Sandown Road had their CATs stolen overnight on Thursday and a second van parked in Exchange Road was also targeted at some point between Friday evening and Monday morning.

Sgt Tim Davies, who is investigating the thefts, said: “With so many vehicles parked on the streets in Stevenage we are now experiencing random thefts from vehicles across the town. Thieves simply cut the catalytic converter from the exhaust pipe and sell them to scrap dealers.

“We are also experiencing a problem with the theft of wing mirrors – in particular those from minis. I would advise people to keep their vehicles in a garage or park in busy, well-lit areas and keep an eye out for people working under cars or behaving suspiciously around them. Property marking kits are also available to make it easier to trace a stolen part back to your vehicle if it is recovered.

“If you have been offered a car part for sale or you are aware of any suspicious selling activity concerning car parts, we would also like to hear from you.”

If you see something suspicious and believe a crime is taking place call 999, or if you have information about recent thefts call police on 101. You can also contact Crimestoppers anonymously on 0800 555 111.