The Sacramento County District Attorney’s Office and the Sacramento County Sheriff’s Office announce the arrest of JD Wallace Simien (40) of Sacramento County for a series of violent sexual assaults.  The assaults occurred between 2013 and 2014 in northern Sacramento County.

Despite investigative efforts at the time of the rapes, no suspects were ever identified and the cases went cold.  The suspect was referred to as the “Cloverleaf Rapist” over the years due to the proximity of the crime scenes to freeway entrances and exits, which resemble a cloverleaf pattern.

The cases remained unsolved until recently. Investigators from the Sacramento County District Attorney’s Office and detectives from the Sacramento County Sheriff’s Office used Investigative Genetic Genealogy (IGG) to develop fact-finding leads, which led them to JD Wallace Simien. This is the same investigative tool used to identify Joseph James DeAngelo (the Golden State Killer and East Area Rapist) and Roy Waller (the NorCal Rapist), who were both prosecuted for their crimes in Sacramento County.  The arrest of Simien marks the sixth IGG case prosecuted in Sacramento County.

“DNA technology is a great tool in our criminal justice system,” said DA Schubert. “DNA can not only be used to exonerate the innocent, but it is a powerful investigative tool for violent crimes that have grown cold because traditional investigative methods are unable to solve the case.  In this case, detectives from the Sheriff’s Office and investigators from my office worked hand in hand in the investigation utilizing Investigative Genetic Genealogy to identify the suspect in this case.”

JD Wallace Simien is currently being held in the Sacramento County Main Jail without bail.  He will be arraigned on Monday, November 8, 2021, in the Sacramento County Superior Court. No further arrests are anticipated in this case. No additional information is available at this time.

This is an active and ongoing criminal investigation. Any community members with information regarding this investigation are urged to contact the Sacramento County Sheriff’s Sexual Assaults Office at (916) 874-3918.

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