Innocent Images, the FBI’s worldwide probe into the proliferation of child porn and sex crimes against children, began 20 years ago with its investigation into the disappearance of a Prince George’s County boy.

Ten-year-old George Burdynski, who was known as “Junior,” was last seen on May 24, 1993, pedaling his red bicycle near his parents’ house in Brentwood, the small community between D.C. and College Park.