UK residents lose £320m every year by responding to mailing scams

Central Scotland Police said people in Alloa, Grangemouth and Stirling had fallen victim to the con.

The scam works using a letter or e-mails to inform someone that they have won a substantial sum of money.

"Winners" are then asked for bank details or payment to cover customs duty or tax costs.

A police spokeswoman said each victim of the scam had been duped into handing over a four or five-figure sum of money.

She added: "These lotteries often involve the victim receiving an letter or e-mail which indicates they have won a substantial sum.

"You may also receive a telephone call from a representative of the 'lottery' whose job it is to build up a level of trust with you and then induce you to part with more money.

"This process often takes place over a period of time and you may be asked to part with money on more than one occasion."