Police are urging London businesses to be cautious after arresting two Montreal men from "a very organized group" tampering with debit-card pads and ATM machines.

On Nov. 11, police said a local business discovered the store's debit pad had been tampered with and called police. The next day, police arrested two suspects at the Greyhound Bus terminal on York Street as dozens of people and media waited for the demolition of the Brunswick Hotel.  Police handcuffed and searched the suspects, who were taken away in a police van.  A warrant has been issued for the arrest of a third suspect.

"This is a very organized group which travels between cities targeting unsuspecting victims by compromising their debit and bank cards at ABMs and retail terminals," said Const. Amy Phillipo.  "This is accomplished by installing additional readers to capture the information on the magnetic stripe on debit cards and the PIN number used by the consumer."

Meanwhilie, Phillipo said merchants can help by treating debit-card pads like cash by ensuring they are secure and not left unattended.