An accidental fire at the Refresco plant at 1 Cliffstar Drive had city firefighters on the scene for two hours.
The Dunkirk Fire received an alarm activation call at 4:40 a.m. Friday. Upon investigation, plant maintenance reported smoke visible on the second floor of the plant office area.
The plant sprinkler system had activated and contained the fire to the general area of origin. Fire crews extinguished the remainder of visible fire and performed ventilation of smoke in the building.
East Dunkirk Fire and ALSTAR ambulance assisted at the fire with West Dunkirk Fire on standby.
Investigators from the City of Dunkirk and Chautauqua County determined the cause of the fire to be started by electrical wiring.