Thousands of people across Metro Vancouver have had their bank accounts drained by a debit card scam in recent weeks.

Criminals placed phoney readers in place of legitimate devices, skimming tens of thousands of dollars.

RCMP officials said Friday they don't know if they're dealing with one organized crime group or multiple groups.

"It's throughout the Lower Mainland," said RCMP spokesman Sgt. Peter Thiessen. "There really are no borders."

Kathryn Hardy, a member of the BC Crime Prevention Association, was a victim.

She lost $1,600, but was later reimbursed by her bank.

"I was surprised because I'm always very careful that I cover my pin number," she told CTV News Friday.

"How did it happen? That's the first thing that came to my mind."

But consumers are being kept in the dark about the locations of where their cards were compromised.

Caroline Hubberstey, a spokeswoman for Interac, said Friday there are a number of reasons for keeping that information confidential.

"Sharing specific locations could compromise an ongoing police investigation," she said. "We also want to protect the merchants who in many cases may also be a victim."

Fraud moves quickly, she added, so avoiding a particular retailer may not help consumers.

Still, some customers at a Burnaby bank Friday said they want to know.

"They should let you know actually when it happened, where it happened and as soon as they know about it," one customer told CTV.

With a report from CTV British Columbia's St John Alexander