A confession in an arson case in Castle Rock.

Investigators say 19 year-old Shane Axmacher has admitted to setting a fire last week in the Kohl's department store.

It burned 3 racks of clothing and caused about $75,000 in damage.

No one was hurt but the fire forced the store to close for 2 days during the busy shopping season.

Police say Axmacher did not indicate why he started the fire.