PAWHUSKA, Okla. (AP) — An Oklahoma prosecutor has dropped marijuana trafficking charges against two men who were arrested transporting a large shipment of industrial hemp that authorities say also included marijuana.

Osage County court records indicate charges were dismissed Tuesday against 30-year-old Andrew Ross and 31-year-old David Dirksen.

The security guards were arrested in January on a truck that was carrying legal hemp in Pawhuska , about 40 miles (64 kilometers) northwest of Tulsa. Police thought marijuana was inside despite paperwork saying the truck was carrying industrial hemp.

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