Korin Vanhouten, 47 and Eldon Alexander, 36, were stopped shortly after leaving a WinCo by a police officer who suspected they left without paying for cotton swabs, makeup and batteries, the Ogden Standard-Examiner reported Friday.
The officer cited them for shoplifting.
When the pair returned to Alexander's pickup truck in the store's parking lot, they noticed someone had entered the unlocked truck and stole a stereo amplifier, a drum machine and cigarettes.
Police Lt. Tony Fox said he had never seen anything like it in his entire career.
The items the two were suspected of shoplifting were worth $26, while the worth of their stolen possessions was about $60, Fox estimated.
Police were investigating.