(NewsNation) — At least 850 murders across the United States over the past few decades are believed to be connected to long-haul truck drivers, according to the FBI's "Highway Serial Killings Initiative."

Frank Figliuzzi, a former FBI assistant director for counterintelligence, said Wednesday on NewsNation's "Elizabeth Vargas Reports" that truckers who spend most of their time on the road are often the suspects.

The FBI initiative helps link murders that initially seem........

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