James Shorty. (Credit: Chicago Police Department)

James Shorty. (Credit: Chicago Police Department)

CHICAGO (CBS) — Investigators say a DNA indexing system led them to the man accused of a sexual assault on Chicago’s North Side.

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The system is operated by the FBI, and it allows police to cross-check DNA in suspects across the country.

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James Shorty of Momence is due in court on Wednesday.

The attack happened Dec. 19 near the Morse CTA station on the Red Line.

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Shorty is charged with sexual assault and aggravated kidnapping.