Police in Ballymena are urging social media users to pass on a warning to older members of the community who may not use the internet about a caller claiming to work for Ballymena Health Centre.
The PSNI have said elderly residents are being telephoned by a male, who has used a number of different names and also claimed to be working for Ballymena Health Centre.
The male has asked questions about health and medication and police are concerned that this may be an attempt to fraudulently collect personal banking details from vulnerable and unsuspecting members of the community.
The PSNI are advising anyone who receives a call like this to not give any personal details and hang up the call.
Medical practices in the area are aware of these calls.
PSNI Ballymena posting on their Facebook page said: "The PSNI appreciates that some older members of the community do not use social media, so on this occasion we are asking the community of Ballymena who follow the PSNI on Facebook to pass this important piece of information on to older people who may be vulnerable."