CBS News Bay Area: Suspect identified in 1979 cold case murder of Sunnyvale security guard

SUNNYVALE – Using DNA analysis, authorities in the South Bay said they have solved a cold case murder of a security guard in Sunnyvale after more than four decades.

According to the Sunnyvale Department of Public Safety and the Santa Clara County District Attorney's Office, Samuel Silva of Colorado has been linked to the killing of 18-year-old Estella Elena Mena.

Silva died in 2008 while in prison on federal gun charges. Authorities said he had a lengthy criminal history which included manslaughter, attempted murder, assault with a deadly weapon and rape, along with firearms offenses.