KUWAIT CITY, Nov 21: The Investigation Unit of Kuwait Fire Service Directorate (KFSD) has launched an extensive investigations to determine the reasons behind the eruption of fire in a bus in Fahaheel area, reports Al-Anba daily.Firefighters from Fahaheel Fire Station led by Lieutenant Ahmed Ali had extinguished the fire that engulfed the bus, which is used for transporting passengers, and spread to a nearby bus. There were no casualties.