Detectives are urging residents to remain vigilant following an increase in catalytic converter thefts across the county.
Over recent weeks officers have received 11 separate reports of thefts involving catalytic converters.
Detective Chief Inspector Karen Jaundrill said: "Investigations in relation to these in incidents are ongoing and we are following a number of lines of enquiry.
"While the investigations take place I encourage motorists to remain vigilant and review any security measures they have in place.
"I also ask scrap metal dealers to be mindful if they are offered a catalytic converter or exhaust system and to contact police if they are in any doubt."
If you have any information about the thefts, or if you see anyone acting suspiciously in your community, please call Cheshire Police on 101. Alternatively, information can also be reported anonymously, via Crimestoppers, on 0800 555 111.
