A tanker truck explosion led officials to order evacuations.Investigators said one person was hospitalized with undisclosed injuries. They said they are unsure what caused the blast Tuesday afternoon.
Authorities ordered an evacuation within a half-mile of the site, which included about 2,000 people — nearly one-third of the town's population — just west of the town's business district.
"We know that we have a trailer transport carrying some sort of flammable liquid adjacent to rail cars," said David Krahling, spokesman for the Sioux Center Fire Department. "I'm not exactly sure how full or empty any of those vessels were."
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