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EAST ST. LOUIS, Ill. (AP) - A California man has been ordered to spend 17 ½ years in federal prison on convictions related to child pornography and inappropriate behavior with an Ohio teenager.

Twenty-seven-year-old David Michael Thompson of Temecula, Calif., was sentenced Friday in U.S. District Court in East St. Louis on charges of transporting child porn and traveling across state lines to engage in sex with a minor child.

Authorities say an Illinois State Police trooper stopped Thompson's car in 2012 and found a 16-year-old girl who'd been reported missing from the Cincinnati area.

The girl told police she met Thompson through online social networking sites and was planning to move in with him.

Investigators say Thompson's cellphone had two photographs showing the girl engaged in sexually explicit conduct.

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