A Michigan man was arrested in Kentucky on Monday after authorities allegedly found a teen who'd been reported missing riding inside his semi-truck, officials said.

Kentucky State Police said in a news release troopers were notified by Michigan authorities shortly before 7 p.m. about the missing female juvenile. It was believed she was in a specific truck traveling through Kentucky on Interstate 75.

Trooper Jeremy Elliotte located the truck traveling in the southbound lanes near mile marker 35 in Laurel County and initiated a traffic stop at the nearby commercial weigh station.

Inside the truck, cops found the girl "unharmed," state police said.

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The truck driver, Robert Phillips, 57, of Michigan, was arrested and charged with the unlawful transaction of a minor and possession of marijuana. Phillips remains jailed at the Laurel County Detention Center.

Additional details about the girl were not immediately released, but WLEX-TV reported she is 14-years-old. State police said an investigation was ongoing.