A fast food restaurant in southeastern Kentucky is closed, after several workers and a customer were rushed to the hospital.

Emergency crews were called to the Long John's Silvers in Letcher County Friday night. We're told six workers and one customer were taken to the Whitesburg Hospital for treatment.

Officials say they suspect carbon monoxide may have caused the people to get sick. All of them are expected to recover. Firefighters are still at the restaurant trying to figure out what caused the incident.