ASHBURN, VA—Two skimming devices were on gas pumps Sunday afternoon at an Exxon station on Flagstaff Plaza, according to the Loudoun County Sheriff's Office. The devices—typically designed to steal customers' debit and credit card numbers—were found on pump numbers 3 and 16.

Anyone who purchased gas at the station is urged check his or her recent credit card activity for suspicious activity. Also, anyone with information is urged to call police at 703-777-1021. To help protect yourself from credit card fraud, police recommend the following: