People in Burton and South Derbyshire are being warned of a telephone scam which is attempting to bully them into handing over cash.
In the last 12 hours Staffordshire Police have had around 10 reports from Burton residents who have received phone calls from a man pretending to be from HM Revenue and Customs and demanding that they hand over unpaid taxes.
Members of the public have been told they have an outstanding debt with HMRC or that a complaint has been lodged against them with HMRC. If they then co-operates they are told they must pay a fee, up to £1500, within a matter of hours.
The fraudsters have demanded that the money be either transferred to a bank account of their choosing or that an equivalent value of iTunes vouchers is purchased and then transferred.
Investigations are now ongoing to identify those involved and to prevent more people from being targeted.
Detective Sergeant Ian Press from Staffordshire Police said: "We would like to remind you that no government agency, like HMRC, would ring demanding money over the phone.
"If you do receive a call like this, please contact Action Fraud on 0300 123 2040. Alternatively, if you are feeling under threat or unsafe, please call 101 or 999 in an emergency."