(STMW) — A 36-year-old Chicago man, who was charged with sexual assault after dozens of rape kits were discovered at a south suburban police station, was sentenced to 40 years in prison Thursday.

Steven Murphy sexually assaulted a woman who was on her way to buy milk for her children on Oct. 14, 2002, according to a statement from the Cook County State’s Attorney’s office.

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After the attack, the victim reported the incident and gave her clothing to Harvey police, but the rape kit sat untested for about five years, the statement said. A 2007 raid of the Harvey Police Department uncovered dozens of such untested rape kits.

Murphy struck the woman over the head and dragged her by the hair to a nearby alley, prosecutors said. He then sexually assaulted her while continually hitting her.

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Investigators made the connection to Murphy after he was convicted of an unrelated burglary charge in 2007, officials said. As a result, his DNA was entered into a statewide database, where it was later matched to the offender in the 2002 attack, prosecutors said.

Murphy is one of 15 people who have been charged or convicted as a result of the discovery of the untested rape kits, according to the statement.

He was previously convicted by a jury and was sentenced on Thursday by Judge Michelle Pitman.

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