Two catalytic converters have been stolen from vehicles in Wordsworth Road, Stowmarket.
The thieves struck overnight on Sunday between 6pm and 8am on Monday.
Both incidents happened in Wordsworth Road and converters were taken from Mercedes Sprinter vans.
Police say that vehicles such as these which have high ground clearance are often targeted by thieves who sell the high value metal components.
Other models which are susceptible are Toyota Hi-Lux, Mitzubishi L 200 and Ford Rangers.
Police have issued the following guidance on safeguarding vehicles:
Park your vehicle in a locked and secure garage/compound at all times.
The use of alarms, lighting and CCTV should be considered to deter thieves - If this isn’t possible park 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.
Look out for people ‘working’ under vehicles as they may not be the owners or lease holders, even if they are wearing fluorescent jackets.
Mark catalytic converters by etching your vehicle registration onto the metal shell, or by using a Secured By Design (SBD) approved forensic marking. This makes it easier for police to trace the converter back to your vehicle should it ever be stolen, and links offenders to a crime.
Consider fitting additional security by installing an SBD approved converter security product, such as a clamp.
More is available on www.securedbydesign.com
Anyone who saw anything suspicious overnight on Sunday should contact Stowmarket Safer Neighbourhood Team on 101 quoting ST/14/2288 or ring Crimestoppers on 0800 555111.