GLYNDON (AP) - Authorities say wood-finishing chemicals likely caused a weekend fire that destroyed a wood carving business in western Minnesota.

The fire at Andy Lake Woodworks in Glyndon was reported early Saturday afternoon.
Glyndon Fire Chief Bob Cuchna says three log sheds and a shop building were destroyed. No one was hurt, but a firefighter was treated at the scene after becoming overheated.

Cuchna says the fire apparently was started by spontaneous combustion of wood-finishing chemicals. The state fire marshal's office is investigating.
Andy Lake Woodworks specialized in wood sculptures carved by chain saw.