Business came to a halt today at a South Zanesville floral shop, as employees find a unknown substance in a flower shop. South Zanesville Floral in south zanesville closed down business for about 3-hours as crews came in to investigate the scene. Richard Guss of the South Zanesville Fire Department said the area were the substance was found was cleaned up. He also said that employees could return to work by the end of the day. The substance is being sent to Columbus to be tested.