Three buildings are a total loss and a juvenile is in custody after a fire last night in Lewisville...The Madelia Fire Chief says the fire broke out just before seven last night in the above floors of a building on Lewis Street and Rockwood.He says fire crews were on the scene until about two thirty this morning.Three firefighters were taken to the hospital for smoke inhalation.The building was vacant at the time of the fire.The Watonwan County Sheriff's Department has a juvenile in custody in connection with the fire.The Sheriff's Department says the investigation is ongoing.