UPDATE: Fire-rescue units have left the school. -- COLLETON COUNTY, S.C. (WCBD) – Students and teachers were evacuated from Colleton County Middle School on Thursday morning following reports of smoke in a classroom. Colleton County Fire Rescue responded to investigate. Officials with the Colleton County Sheriff's Office said the incident was isolated to one classroom and crews found a faulty blower for an AC unit. There was no damage to the classroom. Fire-rescue personnel remain on scene; however, officials said the situation is under control. No injuries were reported.