SIOUX FALLS, S.D. (KELO) — A Spearfish man is headed to federal prison for child pornography.

Authorities arrested Clayton Paulson in an undercover sting during the 2021 Sturgis Motorcycle Rally.

Paulson was originally charged with enticement of a minor, but ended up pleading guilty to child pornography.

Friday, a judge sentenced him to five years behind bars.