Police are warning the public to be vigilant after an increase in the theft of catalytic converters from cars in Gloucestershire.

Catalytic converters contain valuable metals which can fetch several hundred pounds in scrap and drivers are being urged to safeguard their vehicles wherever possible.

Since May 8, there have been 14 thefts from motor vehicles where catalytic converters have been stolen.

"Commonly converters are stolen from vehicles parked on the road and offenders will pull up alongside their targeted vehicle before exiting and cutting off the converter with a saw or angle grinder," said a statement from Gloucestershire Constabulary.

"How will I know if a theft has occurred? You will notice a loud rumbling sound as soon as the engine is turned on which will get louder as you put your foot on the accelerator.

"We are asking for residents to be aware of the security of their vehicles and to report any suspicious activity immediately, taking note of descriptions and vehicle registration numbers where possible."

Police are urging anyone with information to contact them by calling 101 or using its online form.

For tips on keeping your vehicle safe visit: https://www.gloucestershire.police.uk/staying-safe/keeping-your-car-bike-fuel-safe/keeping-your-car-safe/