A former substitute teacher for local elementary schools will spend three and a half years in prison for his guilty plea for possession of child pornography.

32 year-old Eric Hafen had images and videos of child pornography on his computer. Anchorage Police arrested him after a tip back in May.

Hafen worked as a substitute teacher for the Anchorage School District and worked for the Campfire Program at Government Hill Elementary School.

He will also serve five years on probation and must register as a sex offender.