Mount Vernon Police District- Detectives from our Financial Crimes Unit uncovered a credit card skimming operation that targeted ATMs and payment devices inside stores across the Richmond Highway corridor, leading to one arrest.
In September, our Financial Crimes Unit partnered with the United States Secret Service to conduct an operation targeting credit card skimming activity along the Richmond Highway corridor. The initiative was prompted by the discovery of two skimming devices earlier that month, raising concerns about potential widespread fraud.
During the operation on September 11, detectives uncovered seven skimming devices, six of which were advanced models equipped with miniature camera systems strategically placed at ATMs. These sophisticated devices were designed to capture both card data and PIN entries from unsuspecting victims.
Below are photos of skimming devices recovered:

Skimming devices were located at the following stores:
Store: | Address: |
Dollar Tree | 6711 Richmond Hwy |
7-Eleven | 8226 Russell Rd, Woodlawn |
7-Eleven | 5638 Mount Vernon Memorial Hwy, Mount Vernon |
7-Eleven | 5638 Mount Vernon Memorial Hwy, Mount Vernon |
7-Eleven | 2901 Arlington Dr, Groveton |
7-Eleven | 3100 Lockheed Blvd, Groveton |
7-Eleven | 2800 Beacon Hill Rd, Groveton |
Through their investigation, detectives identified Marko Puskas, 40, of no fixed address, as the suspect responsible for placing the skimming devices.
As the investigation continued, the Calvert County Sheriff’s Office in Maryland contacted our detectives regarding similar cases in their jurisdiction and assisted in determining that Puskas was in Fairfax County.
On October 2, detectives, with the assistance of our Violent Crime Suppression Unit, located Puskas in the 7100 block of Lee Highway in Falls Church and took him into custody.

(Surveillance Photo of Puskas)

Puskas was charged with Identity Theft, Possession of Fictitious Identification, Possession of Burglarious Tools, Conspiracy to Commit a Felony, and was served with six outstanding Fairfax County warrants for Unlawful Use of Payment Card Scanning Devices and Re-Encoders. He was transported to the Fairfax County Adult Detention Center, where he was held on no bond.
How to Protect Yourself from Skimming Devices
Credit card skimming devices are often small, discreet, and designed to blend in seamlessly with legitimate card readers. They can be found at ATMs, gas pumps, and even self-checkout machines. Here are some tips to help protect yourself from becoming a victim:
- Inspect before you insert. Before using an ATM or gas pump, look closely at the card reader and keypad. If the card slot looks loose, bulky, or mismatched in color or material compared to the rest of the machine, it could be a skimmer.
- Check for hidden cameras. Skimmers are often paired with tiny cameras aimed at capturing your PIN. Look for any unusual attachments, pinholes, or objects positioned near the keypad.
- Do not accept assistance from anyone you don’t know while using an ATM or payment device. Scammers sometimes pose as helpful bystanders to distract you or capture your information.
- Cover your PIN. Always use your hand to shield the keypad while entering your PIN, even if you don’t see anything suspicious.
- Use familiar or well-lit locations. Whenever possible, use ATMs inside banks or high-traffic areas where criminals are less likely to install devices unnoticed.
- Monitor your accounts regularly. Review your bank and credit card statements frequently for unauthorized transactions, even small ones, which can signal a compromised card.
- Use contactless payment methods. Tap-to-pay cards or mobile wallets provide an extra layer of protection, as they don’t transmit your physical card data.
If you believe you’ve been a victim of skimming or notice a suspicious device, do not attempt to remove it. Instead, call our non-emergency number at 703-691-2131.
Anyone with information regarding this incident is encouraged to call our Financial Crimes Unit at 703-246-3533. Tips can also be submitted anonymously through Crime Solvers by phone – 1-866-411-TIPS (866-411-8477), and by web – Click HERE. Download the ‘P3 Tips’ App “Fairfax Co Crime Solvers”. Anonymous tipsters are eligible for cash rewards. Please leave contact information if you wish for a detective to follow up with you.
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