November’s train derailment near Ellendale, which prompted the evacuation of the community, was caused by a rail defect, according to Union Pacific officials.

The conclusion was formed after an extensive investigation, said Director of Corporate Communications Calli B. Hite.

“Again, we continue to appreciate the Ellendale community’s support as we restored operations and cleaned up the site,” she said. “With the exception of a small pile of railroad ties, the site is now clear of all incident-related debris. The rail cars are now gone.”

The 146-car train was hauling mixed freight on the morning of Nov. 11 from South St. Paul to North Platte, Nebraska, when 22 total cars derailed.

One rail car in the train was punctured during the derailment, leaking liquid petroleum gas and leading to the temporary evacuation of the community and other residents within one mile of the train.