ROBERTS, Wis. (AP) -

A 24-year-old man is charged with breaking into a western Wisconsin elementary school and starting a fire that caused $1.5 million in damage.

Justin Nelson of Roberts was charged Friday with arson, criminal damage to property and burglary, all felonies.

Police Chief Dan Burgess says Nelson was arrested Thursday in this week's arson at St. Croix Central Elementary School in Roberts.

The complaint alleges Nelson also stole drugs used to treat attention deficit disorder from the school nurse's cabinet and cameras from several classrooms.

The Star Tribune reports investigators determined fires were set in four locations in the building.

Classes for the 600 students were called off for the rest of the week. Administrators plan to resume classes Monday at a nearby Girl Scouts camp.