Western Australian Police are investigating the extent of an alleged card skimming scam using "compromised EFTPOS point-of-sale devices" in retailers across the Perth metropolitan area.
In a statement [PDF], Police said the major fraud squad had "received substantial information regarding alleged credit [and] debit card skimming and pin capturing."
"Police at this time are unable to disclose the nature of the skimming devices being utilised due to operational sensitivities, however they are working closely with retailers and financial institutions to address these matters," the statement said.
The major fraud squad had been joined by the technology crime investigation team to examine the alleged offences.
Major fraud squad officer in charge, detective senior sergeant Don Heise, told a media gathering that Police were concerned by "the number of people who have contacted us with regards to their cards being skimmed."
No official figures were released, but a report in The Australian IT, quoting WA Police, claimed at least $150,000 had been netted from 2,500 bank accounts.
Police urged Perth residents to check their statements for illegitimate withdrawals.
Retailers were also "requested to report to police any recent suspicious activity and in particular occurrences where EFTPOS Point of Sale devices have been stolen or tampered with."
Anyone with information was urged to contact Crime Stoppers on 1800 333 000.