Authorities in central Florida say they have charged more than three dozen suspects with possession of child pornography, including one man with over 10,000 images.

The Polk County Sheriff's Office says 35 suspects were arrested Thursday, and they are still looking for six others. The investigation began more than a year ago. Forty-five people were charged in all.

Sheriff Grady Judd called it the largest child pornography sting in the department's history.

Judd says the suspects include a father and son who are both registered sex offenders and were each charged with ten counts of possession of child pornography. Others were found with thousands of images and videos.

Authorities say some of the images involve children as young as toddlers.