Police: Substitute teacher faces child pornography charges

A Libertyville man who worked as a substitute teacher is charged with possessing child sexual abuse images, police said Thursday.

Libertyville police, acting on a tip from Internet Crimes Against Children, said they went to the home of Duncan Groebe, 64, of the 200 block of Lake Street, on Sept. 10 and found him in possession of child sexual abuse material.

Groebe was taken to a medical facility after his arrest for an unrelated health event, police said.

Groebe was released from the medical facility Wednesday and was taken to Lake County jail, where he is being held on two counts of possession of child pornography.

During the investigation, police said they learned that Groebe was a substitute teacher for various unnamed school districts in the Lake County area.

Police said it appears the child sexual abuse images Groebe had were obtained online. He remained in custody Thursday to await a hearing in first appearance court.