--- description: Newly released documents show that investigators collected the suspected Golden State Killer's DNA while he shopped at a Hobby Lobby. title: How Investigators Got the Golden State Killer Suspect's DNA image: https://static.time.com/v3/assets/bltea6093859af6183b/bltcfe4a8412d602c93/69892ef7cf40a87d5fc4c109/golden-state-killer-court.jpg?branch=production&width=3840&quality=75&auto=webp&crop=16:9 ---  * [U.S.](/section/us/) ## U.S. Update your preferences in [Account Settings](/account/preferences/) Close * [Crime](/tag/crime/) ## Crime Update your preferences in [Account Settings](/account/preferences/) Close # Investigators Collected the Suspected Golden State Killer's DNA While He Shopped at Hobby Lobby  by [Jamie Ducharme](/author/jamie-ducharme/)  ## Jamie Ducharme Update your preferences in [Account Settings](/account/preferences/) Close Ducharme is a contributor to TIME. Jun 2, 2018 3:11 PM CUT  Joseph James DeAngelo, the suspected "Golden State Killer", appears in court for his arraignment on April 27, 2018 in Sacramento Joseph James DeAngelo, the suspected "Golden State Killer", appears in court for his arraignment on April 27, 2018 in SacramentoJustin Sullivan—Getty Images  by [Jamie Ducharme](/author/jamie-ducharme/)  ## Jamie Ducharme Update your preferences in [Account Settings](/account/preferences/) Close Ducharme is a contributor to TIME. Jun 2, 2018 3:11 PM CUT [Newly released documents](http://documents.latimes.com/la-me-affidavit-warrant-suspected-golden-state-killer/ "undefined") reveal how investigators obtained the DNA that famously helped them reopen the decades-old Golden State Killer case. In April, [police arrested Joseph James DeAngelo](http://time.com/5254793/golden-state-killer-caught-suspect-joseph-james-deangelo-police/ "undefined"), the man suspected to be behind a string of grisly murders and rapes that terrorized California beginning in the 1970s. The case made headlines not just for its notoriety, but also because investigators [used a little-known genealogical website](http://time.com/5256835/how-did-golden-state-killer-genealogy-websites-online-dna-police/ "undefined") to track down their suspect — a feat that stirred up both [excitement in the criminal justice community,](http://time.com/5265316/golden-state-police-dna-zodiac-killer/ "undefined") and [questions about genetic privacy](http://time.com/5257474/golden-state-killer-genetic-privacy-concerns/ "undefined"). Court documents released Friday detail how investigators used genetic material to eventually arrest DeAngelo. Investigators first zeroed in on DeAngelo after building an online genealogical profile using DNA taken from an old crime scene, then using it to find distant relatives with matching genetic profiles. Once they had a suspect in mind, however, they needed to prove that his DNA matched that from the crime scenes. The 123 pages of documents released Friday show that detectives lifted traces of DNA from DeAngelo’s car door while he shopped at a California Hobby Lobby in April, allowing them to match the genetic material with semen gathered from an old crime scene, [the Los Angeles _Times_ reports](http://www.latimes.com/local/lanow/la-me-ln-golden-state-killer-deangelo-warrant-20180601-story.html "undefined"). They obtained a second sample from a tissue in a trash can outside DeAngelo’s home, according to the _Times_, and arrested him the next day. The documents, while heavily redacted, were unsealed at the request of a lawyer representing the _Times_ and other media outlets, and despite objections from DeAngelo’s defense team, the _Times_ reports. While the documents detail items in DeAngelo’s home allegedly taken from crime scenes, including wedding bands and photographs, the list of evidence seized from his home remains sealed. DeAngelo has been charged with 12 counts of murder in all, the _Times_ reports. He has not yet entered a plea, and it is not yet clear when and where his trial will take place. ```json [{"@context":"https://schema.org","@type":"NewsArticle","@id":"https://time.com/5299394/golden-state-killer-dna/","mainEntityOfPage":{"@type":"WebPage","@id":"https://time.com/5299394/golden-state-killer-dna/"},"headline":"Investigators Collected the Suspected Golden State Killer's DNA While He Shopped at Hobby Lobby","datePublished":"2018-06-02T15:11:38.000Z","dateModified":"2026-02-23T20:27:08.585Z","description":"He was arrested in April","url":"https://time.com/5299394/golden-state-killer-dna/","keywords":["Crime","onetime"],"thumbnailUrl":"https://static.time.com/v3/assets/bltea6093859af6183b/bltcfe4a8412d602c93/69892ef7cf40a87d5fc4c109/golden-state-killer-court.jpg?branch=production&width=1200&quality=75&auto=webp&crop=1200:675&height=675","author":[{"@type":"Person","name":"Jamie Ducharme","jobTitle":"Ducharme is a contributor to TIME.","url":"https://time.com/author/jamie-ducharme/"}],"articleSection":"U.S.","image":[{"@type":"ImageObject","url":"https://static.time.com/v3/assets/bltea6093859af6183b/bltcfe4a8412d602c93/69892ef7cf40a87d5fc4c109/golden-state-killer-court.jpg?branch=production&width=1200&quality=75&auto=webp&crop=1200:675&height=675","width":1200,"height":675,"headline":"Golden State Killer Court Arraignment","caption":"Golden State Killer Court Arraignment","creditText":"Justin Sullivan—Getty Images","representativeOfPage":true}],"publisher":{"@type":"Organization","name":"Time","url":"https://time.com/","logo":{"@type":"ImageObject","url":"https://time.com/images/logo.png","width":528,"height":156},"foundingDate":"March 3, 1923","sameAs":["https://www.facebook.com/time","https://www.instagram.com/time/?hl=en","https://twitter.com/time","https://www.pinterest.com/timemagazine"]}},{"@context":"https://schema.org","@type":"BreadcrumbList","itemListElement":[{"@type":"ListItem","position":1,"item":{"@id":"/section/us/","name":"U.S."}},{"@type":"ListItem","position":2,"item":{"@id":"/tag/crime/","name":"Crime"}},{"@type":"ListItem","position":3,"item":{"@id":"https://time.com/5299394/golden-state-killer-dna/","name":"Investigators Collected the Suspected Golden State Killer's DNA While He Shopped at Hobby Lobby"}}]}] ```