A man from just outside of Washington, DC turned himself in to local police—with his computer in tow—after receiving a pop-up message from what he believed was an “FBI Warning” telling him to click to pay a fine online, or face an investigation.

While specific details on the case are scant as of yet, it appears that the suspect here fell victim to a type of ransomware that has been proliferating for years now—raking in millions for the scammers behind it.

Police said Jay Matthew Riley, 21, of Woodbridge, Virginia, walked into Prince William’s Garfield District Station on July 1, 2013 to “inquire if he had any warrants on file for child pornography.”

According to the local police department’s press release, posted on its own Facebook page on Thursday, July 25, 2013:

The accused voluntarily brought his computer to the station and, following a search, several inappropriate messages and photos of underage girls were recovered. Detectives were able to identify one of the girls as a 13 year old from Minnesota. A search warrant was obtained and executed at the home of the accused. As a result, computers and other electronic devices were seized. Following the investigation, the accused was subsequently arrested on July 23rd. The FBI message that the accused had originally received was determined to be a virus and not a legitimate message. The investigation continues.

The Prince William County police also noted that Riley is now being held without bond. He was charged with “3 counts of possession of child pornography, 1 count of using a communication device to solicit certain offenses involving children, and 1 count of indecent liberties with a minor.”