Gardaí in Cork, Tipperary and Limerick are urging members of the public to be vigilant following a number of scams in the area.
They involve a man who claimed to be from the company Phone Watch, who took debit cards and withdrew cash from people's accounts.
In one instance, on Saturday at around 3:30 pm in the afternoon a man, who claimed to work for Phone Watch, called to a house in Clonmel, Co. Tipperary.
The man, who had apparent Phone Watch paraphernalia and literature, was then invited into the home.
When inside he offered to upgrade their security system for a fee.
When the victim handed over his debit card for payment, the man asked the injured party to enter his pin number into a small device he was carrying.
He then kept the debit card and handed back a different one.
Cash was then withdrawn at a number of banks in Tipperary and Limerick later that day and on Sunday.
Investigations are ongoing.
Anyone with any information in relation to incidents of this nature is asked to contact Gardai.