The man wearing the Batman costume brought the suspect into a local police station in Bradford, in northern England. Surveillance footage shows the hero wearing a cape, gloves and a mask.
The 27-year-old suspect was later charged with handling stolen goods and fraud-related charges, police said.
The caped crusader evidently did not want his identity revealed, considering he left the station without offering any personal identification.
"The person who brought the wanted man into the station was dressed in a full Batman outfit," a spokeswoman for West Yorkshire Police said. "His identity, however, remains unknown."
The fictional comic book superhero, known to some as the Dark Knight, was created by artist Bob Kane and writer Bill Finger in 1939, and he continues to spread his cape as a cultural icon.
BBC reports that a store owner named Kathryn Sutcliffe, of Kirkgate Market's The Joke Shop, believes she may have sold the man his Batman costume.
A gentleman in his 20s with curly black hair bought the outfit just days prior to the incident.
"Usually they want the Dark Knight costume but he wanted this one," Sutcliffe said. "He wanted the one with the muscly chest as well. It's like the one Del Boy wears in ‘Only Fools and Horses.’"
Though she knows the man’s name, considering he paid with a credit card, Sutcliffe says she'll keep his identity a secret.