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DNA hit links death row inmate to Riverside County cold case

November 16, 2010 |  8:29 pm

Authorities using DNA evidence have linked a 44-year-old convicted murderer and rapist on death row to a 1990 double homicide in Riverside County.

Alfredo Rolando Prieto, who is already on California's death row and who recently received the death penalty for a murder in Virginia, was linked to the slayings of Stacey Siegrist, 19, and Anthony Gianuzzi, 21, the Riverside County Sheriff’s Department said Tuesday.

On May 5, 1990, a jogger discovered the victims’ bodies along a dirt power line access road west of the intersection of Canal and Alta streets in Rubidoux. The two were dating and had not been seen for nearly two days. Both had been shot once in the side of their heads and once in the back of their necks. Siegrist had also been sexually assaulted.

Earlier this year, Riverside County’s cold case unit submitted evidence from the crime scene to a private laboratory. On Oct. 4, the lab linked the DNA to Prieto. The department said it delayed notifying the public to ensure Virginia jurists were not influenced during the penalty phase of Prieto’s trial there.

Prieto has been linked to nine murders and four sexual assaults, including the 1992 murder and rape of 15-year-old Yvette Woodruff of Ontario, the crimes for which he was sentenced to death. He is appealing his California death sentence.

In 2005, preliminary DNA tests implicated him in three 1988 Virginia slayings. Prosecutors from Fairfax County, Va., extradited Prieto from California to face trial for two of those murders.

Prieto has operated with three other accomplices in the past, and authorities believe the Rubidoux murders involved one or two additional suspects.

Riverside County sheriff’s homicide investigators are asking anyone with information about the case to call (951) 955-2777.

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-- Corina Knoll

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