A man charged with making and distributing child pornography has pleaded guilty to charges related to the crime.

Roderick Kyle Janssen was charged in April after police were notified after he allegedly shared illicit photos with an undercover FBI agent online.

Special investigators say they have identified four victims of Janssen's crimes.

"We may have other victims and for me the focus of this particular unit is to identify those other victims because there is a human factor here. There are children involved and we need to be able to get them the proper counseling because of the sexual content and because of their ages," said Staff Sgt. Steve Lorne from the Alberta ICE Unit.

Janssen was arrested at his southeast Calgary home and remains in police custody.