An Edmonton man who admitted to molesting more than 50 boys has been labelled a dangerous offender.

A judge said 33-year-old Christopher Karasek poses a high-risk to re-offend and there are no treatment programs available for him in the community.

The court heard the sex crimes came to light after Karasek admitted them to his therapist during  counselling sessions.

The boys were between the ages of two and 16.

With files from the Canadian Press