Evacuations underway after naphtha leak causes fire at Louisiana refinery; no injuries reported

Naphtha leak at Marathon Petroleum refinery storage tank sparked fire contained within property.
Evacuations ordered within 2-mile radius of Garyville, Louisiana refinery as precaution.
Initial foam suppression efforts failed to extinguish fire; smoke plume spreads beyond property.
No injuries reported though residents advised to stay indoors due to potential respiratory impacts.
Investigation underway to determine exact cause of naphtha release and resulting fire.