Officers attached to the Central West Police District are investigating several incidents which occurred between Tuesday, September 10, and Monday, September 16.

Shortly after 3pm on Tuesday, September 10, a man and woman purchased a number of items with what police believe to be a fraudulent credit card.

On paying for the items, staff were told the card was damaged and required the manual input of the card's number to complete the purchase.

Police were contacted after reports the pair was acting suspiciously within the shopping centre.

Between last Thursday and Monday, two men and a woman purchased various items using a credit card at a business on Summer Street.

The business has since received a disputed transaction for the initial transaction.

One man has been described as Caucasian in appearance with an olive complexion, a thin build, around 165-175cm tall, with brown hair, brown eyes and unshaven.

The second man has been described as Caucasian in appearance, with an olive complexion, solid build, 180-185cm tall, with brown hair, brown eyes and no facial hair.

The woman has been described as Aboriginal/ Torres Strait Islander in appearance, with an olive complexion, thin build, 160-165cm tall, with black hair and brown eyes.

Central West Police District crime manager Detective Chief Inspector Bruce Grassick urged staff to be vigilant about checking all credit cards when they are presented.

"This would include checking the card for physical signs of damage, consulting managers if staff have doubts about the transaction, and being highly cautious about the manual input of credit card numbers," he said.

Police also urge people to be mindful of the whereabouts of their bank/credit card, make regular statement checks and report any abnormalities to their bank in the first instance.