Officers investigating reports of fraudulent fish sales in Runcorn have arrested three men.
The men were arrested on Friday 13 July after officers stopped a suspicious ford transit van on Cunningham Drive in Runcorn.
The three occupants of the van were arrested at the scene on suspicion of fraud by false representation.
All of the men, age 26, 29 and 41 from the Durham area, have since been released under investigation pending further enquires.
Detective Sergeant Robert McLoughlin said: "While these arrests have now been made, I would like to remind residents to remain vigilant and continue to report any suspicious activity.
"I'd also urge residents to keep an eye out for any elderly or vulnerable family members or neighbours to ensure they don't fall victim to any fraudulent doorstep salesmen."
Suspicious activity can be reported online at https://cheshire.police.uk/contact/general-enquiries, via Crimestoppers anonymously on 0800 555 111 or via telephone on 101.