A 42-year-old Antioch man is facing 13 felony counts after Lake County investigators say they uncovered more than 50,000 AI-generated child sexual abuse images and videos tied to his home. Mark E. Hansen was arrested following the execution of a warrant on Thursday at an address on the 41,100 block of North Lincoln Avenue in unincorporated Antioch.
According to the Lake County Sheriff's Office, investigators found the trove of AI-generated material at Hansen's home, and officials say he created the content himself, depicting minors in sexual acts. Hansen was charged with 13 felony counts of obscene depiction of a purported child, and officials say additional charges are anticipated as the investigation continues.
More than 50,000 images and videos were found at Hansen's home.
Forensic Review Underway as Charges Loom
Numerous electronic devices were seized from Hansen's home and are now undergoing forensic analysis, investigators say. A central question still unresolved is whether any of the recovered images depict real children, something investigators are actively working to determine.
The Lake County State's Attorney's Office intends to file a petition to detain Hansen while he awaits trial, according to the same sheriff's office account relayed by the station's report. No information has been released about his attorney, bond status, or a scheduled court date.
Part of a Broader Surge in AI-Generated Abuse Material
Hansen's arrest lands amid what researchers describe as an explosion in AI-generated child sexual abuse material nationwide. The Internet Watch Foundation assessed 8,029 AI-generated images and videos as showing realistic child sexual abuse in 2025, including 3,443 videos — a jump the organization calculated at more than 26,000 percent compared with 2024, when it saw just 13 such videos.
The foundation also noted that the quality of AI-generated videos has improved dramatically, making the imagery appear significantly more realistic. Per the Guardian, the foundation had already assessed 6,310 AI-generated images meeting the legal definition of child sexual abuse in just the first half of 2026 — a 40 percent increase over the more-than-4,500 total recorded in all of 2025.
The National Center for Missing & Exploited Children received more than 7,000 tips in 2025 involving users generating or possessing generative-AI abuse material, and more than 30,000 reports describing attempts to generate such content using uploaded files and text prompts, according to Nashville Banner. Bellingcat researcher Kolina Koltai told NPR that offenders need very little technical knowledge to begin creating this kind of content through web-based platforms.
Other Illinois and Midwest Cases
Hansen's case is not the first of its kind in Illinois this year. In Kane County, Jeremy Batterman was charged in August with 40 counts of production of child sexual abuse material and four counts of obscene depiction of a purported child, all felonies, according to CBS News; prosecutors accused him of both altering images of real children with AI and generating abuse material from scratch.
The U.S. Department of Justice reported that a Missouri man, Michael A. Huseman, possessed more than 22,000 child sexual abuse files, 6,000 anime files depicting child abuse, and more than 400 AI-generated files.
The Lake County investigation remains open, with forensic analysts still working through Hansen's seized devices and investigators continuing to determine whether real children appear in any of the recovered files.
