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MIAMI GARDENS (CBS4) ― Customers of a North Dade luxury auto dealership have been warned that their identities, bank accounts, even social security numbers may have been compromised by thieves who apparently have adapted low tech criminal techniques to the high-tech crime of identity theft.

CBS4 Newshas learned that a criminal is probe underway into what happened at the Warren Henry automotive group, after a woman walked in off the street and took off with a box of sensitive customer data.

The business is known as one of South Florida's top luxury car dealerships, selling Infinitis, Jaguars, Land Rovers and other high-end brands to well-heeled customers.

Now, this dealer is dealing with the aftermath of this showroom security breach. Sources close to the investigation confirm a woman walked in off the street a few weeks ago pretending to look at cars in the showroom. While another woman was engaged in conversation with sales personnel, the suspect made her way to a back office and grabbed a box containing the sensitive financial data of dozens of customers who'd recently purchased fancy cars from the dealer.

The sources also say it's believed the document heist was well orchestrated as the woman knew where to go and what to grab. The source told CBS4 News that the thieves even had a getaway car waiting for them, without a license tag on the back so they couldn't be tracked.

As a result of the theft, Warren Henry has had to contact dozens of customers to let them know their bank accounts, credit, and other personal information may have been compromised.

Miami-Dade Police are investigating, but declined to talk to us about the case, saying they haven't made an arrest. Sources near the investigation say they're close and have already identified one suspect off the showroom's surveillance system, and told CBS4's Brian Andrewsthat other dealerships may have been targeted in the same scheme.

It's unclear at this point if the woman has actually used any of the data that was stolen.

The investigator was also able to purchase a set of new vehicle keys from the custodian. (Note: Investigators are not releasing the name of the store or the name of the custodian, who has been sentenced to jail time and probation, because they are cooperating .