BARNUM, Iowa (AP) — A malfunctioning switching mechanism apparently caused six tankers filled with ethanol to derail in northern Iowa. The Fort Dodge Messenger reports the tankers were hauling the fuel from Valero Renewables-Fort Dodge on Tuesday night when they derailed. Lt. Tom Ubben, of the Fort Dodge Fire Department, says the cars were backing up when the switching mechanism caused them to leave the tracks. The tracks, located in the small community of Barnum, are owned by the Canadian National Railway.

Railway spokesman Patrick Waldron says no one was injured and no ethanol spilled. Ubben says crews from Waterloo and Omaha, Nebraska, were called to the derailment Tuesday night and were using heavy machinery to move the cars off the rail line and transfer the ethanol to other containers.