DNABased Ancestry Prediction Rockne P Harmon Senior Deputy
DNA-Based Ancestry Prediction Rockne P. Harmon Senior Deputy District Attorney Alameda County California
Considerations s s Should we do it? Does it work? What does it add? What priority?
Considerations s Should we do it? – Legal – Policy u Have always had the capabilityu Pep. A, Hp, Hg- Kevin Cooper
Considerations s Does it work? – Better than existing STR data?
Considerations Sex attacker hunt moves to Trinidad Press Association Friday October 20, 2006 10: 03 AM s What does add Detectives haveitflown to Trinidad to make an appeal for information in the hunt for one of Britain's worst serial sex attackers, Scotland Yard has said. Police have spent more than eight years on the trail of the rapist and burglar, who is believed to have a sexual fixation with the elderly and to be behind 98 separate crimes over 15 years. Forensic science techniques carried out in the US have shown he originates from the Windward Islands in the Caribbean. It is hoped that through the appeal, officers will be able to establish whether the man has current links with the region and encourage members of the public to come forward with information.
Considerations s What is the priority? – Cold hit rate? California 18% – National- unknown – Spotty cold hit follow up
Cold Hit Follow Up s s s s Total reported- 482/1374 Convicted- 112 (23%) Charges pending- 101 (20. 9%) Charges declined- 144 (29. 8%) Investigation underway- 39 (8%) Convicted/charged before hit- (10. 6%) What cold hit? ? - 35 (7. 3%)
Cold Hit Follow Up s Charges declined- 144 – Can’t locate victim- 17 – Victim refused- 27 – Statute of Limitations- 18 – Insufficient proof- 65 – Interests of Justice- 17
Conclusion s s Interesting tool Special cases Resource commitment Focus on the use of partial match info and familial search tools first
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