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Date Posted / Updated: 11/16/2010 3:53:22 PM Coroner's Press Releases Most Wanted Unidentified Persons Missing Persons

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Press Release: Central Homicide Unit Coroner Sheriff Type of Incident: Cold Case Double Homicide For the Media Date/Time Written: November 16, 2010 Media Information Bureau Media Guide Date/Time of Incident: May 5, 1990 at 8:19 AM

Location of Incident: Canal Street and Alta Street, Rubidoux Email Alerts for Press Releases

Reporting Officer: Sergeant Scott Brown #1347 Central Homicide Unit Sheriff's Crime Links Crime Reports Database File Number(s): E90125044 Don't be a Victim Juvenile Crimes Details: Report a Property Crime

On October 4, 2010, The Riverside County Sheriff’s Department’s Cold Case Unit solved an unsolved double homicide case dating back to May 5, 1990. Alfredo Prieto (born in 1965), was 24 years old in 1990, was identified as the homicide suspect in this case. Alfredo Prieto is currently 44 years old and recently received the death penalty after a murder trial in Virginia. Alfredo Prieto had previously been convicted of murder in California in 1992 and received the death penalty in that case. He is currently going through the appellate process in Most Wanted California. (This press release was delayed for six weeks to ensure Virginia jurists were not influenced during Prieto’s penalty phase.) California FBI On May 5, 1990, a jogger discovered two bodies along a dirt power line access road west of Canal St. and Alta Riverside District Attorney St. in Rubidoux, California. The victims were identified as Stacey Siegrist (19 years old) and Anthony Gianuzzi (21 years old). Ms. Siegrist was the victim of a sexual assault, and had been shot once in the side of her head Crime Stoppers and once in the back of her neck. Mr. Gianuzzi had his wrists and feet tied, and was shot once in the back of his head and once in the back of his neck. Ms. Siegrist and Mr. Gianuzzi had been dating and were last seen in the La Quinta evening hours on May 3, 1990. Palm Desert Indio Coachella

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Stacey Siegrist, 19 Years Anthony Gianuzzi, 21 Years

In 2010, the Cold Case Unit submitted evidence to Orchid Cellmark, a private laboratory in Texas, for testing. Orchid Cellmark confirmed evidence located on Ms. Siegrist contained Alfredo Prieto’s DNA. In 2009, The National Institute of Justice awarded the Riverside County Sheriff’s Department Homicide Cold Case Unit with a grant to aid in the testing of DNA evidence in unsolved homicides. The solving of this cold case homicide is based off of Prieto’s DNA being found on evidence left at the original 1990 crime scene. Charges will be requested against Alfredo Prieto in this case with the Riverside County District Attorney’s Office. It is not known when the Riverside County District Attorney’s Office will reach a decision on the filing of this case.

Alfredo Prieto has a history of sexual assaults and murder. He has been linked to at least nine murders and four sexual assaults. In one of the cases, Prieto was working with three other suspects. In the case of Siegrist and Gianuzzi, based on evidence at the scene, it is likely that Prieto had been working with one or two other suspects. Riverside County Sheriff’s homicide investigators are asking that anyone with information on other suspects in this case to contact Investigator John Powers at the Riverside County Sheriff’s Department – Central Homicide Unit at (951) 955-2777.

Alfredo Prieto’s linked homicide cases:

May 10, 1988: Tina Jefferson (24) was sexually assaulted and shot to death in Arlington, Virginia. DNA has linked Prieto to this case, but he has not been charged with this case.

December 3, 1988: Rachael Raver (22) was sexually assaulted and shot to death along with Warren Fulton III (22), in Reston, Virginia. Alfredo Prieto, born in 1965 Prieto was convicted and given the death penalty by a jury, but that sentence has not been imposed by the judge as of this writing.

September 2, 1989: Manuel F. Sermeno (27) was shot to death and his body was found in a burning car near Interstate 95 in Prince William, Virginia. Prieto was linked to this case by ballistics, but he has not been charged with this case. Virginia authorities have said it is unlikely they will charge Prieto because he has been given three death penalties.

May 3, 1990: Stacey Siegrist (19) was sexually assaulted. She and Anthony Gianuzzi (21) were shot to death in Rubidoux, California. DNA has linked Prieto to his case, but he has not been charged as of this writing.

June 2, 1990: Lula Farley (71) shot to death in Ontario, California. Herbert Farley (65) was abducted and his body was found two weeks later in Rubidoux, California. Herbert Farley had been shot to death. Prieto is linked to this case by ballistics, but he has not been charged as of this writing.

September 2, 1990: Prieto and two other suspects kidnapped three women in Ontario, California during a residential burglary. Prieto sexually assaulted Yvette Woodruff (15) and then shot her to death. The other two suspects sexually assaulted the other two women and then attempted to kill them by stabbing them with knives. The other two women survived the knife assault and were able to identify all three suspects. All three suspects were convicted on this case. Prieto was sentenced to death.

Since it has been twenty years since the homicides occurred, Cold Case investigators met with family members of Stacey Siegrist and Anthony Gianuzzi. During these meetings, investigators shared information about the crime scenes and Alfredo Prieto. The purpose of the meetings were to bring closure to the families and to advise them of pending media interest.

This was the fourth case solved by the Cold Case Unit since being awarded the grant. Currently, the Cold Case Unit is examining 84 Unsolved Homicide cases with potential DNA evidence. Thus far, twenty-six cases have yielded suspect DNA, four have been solved, fifteen have been entered into CODIS (a national DNA database), and seven need further work prior to CODIS entry.

Anyone with information regarding these homicides is encouraged to contact Investigator John Powers at the Riverside County Sheriff’s Department - Central Homicide Unit at (951) 955-2777.

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