DNA in a 46-year-old cold case murder leads to an arrest

A man has been arrested through DNA and genetic genealogy in the decades-old cold case killing of 11-year-old Linda Ann O'Keefe, who was strangled to death in Southern California in 1973.
1:12 | 02/21/19

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Transcript for DNA in a 46-year-old cold case murder leads to an arrest
The major break tonight in a murder of an 11-year-old girl, years later, what was it that broke this wide open? Here's ABC's Marci Gonzalez. Reporter: The agonizing, nearly 46-year long manhunt for this little girl's killer, finally over tonight. According to police. Generations of investigators worked on her case. We never gave up. Reporter: Linda Ann o'keefe vanished in July of 1973, while walking home from school. The 11-year-old found the next day strangled in a ditch. Newport beach police retelling the details of that day from her perspective last year on Twitter, and putting out this computer generated composite hoping to generate leads. But it was a recent DNA match on the geneology website "Family tree DNA" that police say led to their suspect, James Alan Neal. They were able to get additional DNA, which resulted in the corroboration of the DNA from the victim's body. Reporter: It is the same technology used to track down the golden state killer and the police now calling this cold case closed, arresting Neal in Colorado. The 72-year-old faces several charges, including first degree murder. David? Marci, thank you. When we come back, the new alert tonight about a treatment

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