Police are warning residents to be vigilant following several incidents involving bogus callers in Chester.
During the incidents, which have occurred in Hoole, Stocks Lane and Balmoral Park, elderly victims have been targeted by cold callers who claimed to be builders and told the victims that their roof needed to be repaired.
The builders then told the residents that they could do the repairs, but in order to do so needed payment in advance.
Several victims have handed over large amounts of money, with one being asked for an additional £6000.
Detective Sergeant Henderson said "Following these incidents I would like to appeal to the local community to look out for their elderly relatives, friends and neighbours to help reduce the likelihood of someone else becoming a victim.
I would also like to remind all residents about the importance of people not letting anyone into their home who call unexpectedly and if you have a chain, always use it.
Make sure you ask for identification and if they provide it, close the door and check the number, but most importantly if you have any doubts about them being genuine, don't let them in and ask them to come back later when you are not alone"
Any suspicious activity should be reported to 101 or 999 immediately.
Information can also be reported anonymously via Crimestoppers on 0800 555 111.