Updated

An Illinois middle school teacher charged with 10 counts of illegal possession of child pornography has reportedly admitted to molesting dozens of boys.

Kenneth Lee Johnson told police he sexually abused 75 boys over the past 35 years, but those claims have not been substantiated, according to MyFOXChicago.com.

"Right now, we have no indication there were any victims in our school district," Antioch Elementary District 34 superintendent Scott Thompson told MyFOXChicago.

Johnson, who taught social studies in District 34 for 20 years was arrested Jan. 20 after an FBI tip led local authorities to interview him, MyFOXChicago reported.

Johnson admitted to watching child pornography and sexually abusing 75 boys, Det. Sgt. George Manis told MyFOXChicago.

Lake County Sheriff Mark Curran told the station the police had not be able to substantiate any of Johnson's victims, but they did seized DVDs, floppy disks, printed materials and a computer containing more that 1,000 images and nearly 100 videos of child pornography from his home.

Johnson has been placed on leave and is banned from school grounds, MyFOXChicago.com reported. He is being held in the Lake County Jail on $500,000 bond.

Click here to read more on this story from MyFOXChicago.com.