INDIANA - A U.S. Marine is in custody after authorities say he kidnapped and sexually assaulted a 12-year-old girl from Indiana.

What we know:

William Richard Roy, 24, of Camp Lejeune, North Carolina, was arrested Oct. 26 by the FBI.

He faces charges of enticement of a minor to travel for illicit sexual activity, transportation of a minor to engage in illicit sexual activity and interstate travel with intent to engage in a sexual act with a minor.

The investigation began Oct. 25, when the FBI’s Indianapolis field office was notified by Hammond police that a 12-year-old girl had been reported missing and was believed to be traveling with Roy.

Authorities said the girl’s grandmother reported her missing earlier that day.

According to the FBI, Roy allegedly flew to Chicago on Oct. 24

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