Editing Columbine High School massacre (section)

=== Search warrant press conference ===
Also on April 30, high-ranking officials of Jefferson County and the Jefferson County Sheriff's Office met to decide if they should reveal that Michael Guerra had drafted an [[affidavit]] for a [[search warrant]] of Harris's residence more than a year before the shootings, based on his previous investigation of Harris's website and activities.<ref name=event1>{{cite web |title=April 20, 1999 |url=http://www.acolumbinesite.com/event/event1.html |publisher=acolumbinesite.com |access-date=September 12, 2016 |archive-url=https://web.archive.org/web/20160918205249/http://www.acolumbinesite.com/event/event1.html |archive-date=September 18, 2016 |url-status=live |df=mdy-all}}</ref> Since the affidavit's contents lacked the necessary [[probable cause]], they decided not to disclose this information at a press conference held on April 30, nor did they mention it in any other way.<ref>{{cite news |title=Grand Jury Knocks Columbine Probe |url=https://www.cbsnews.com/news/grand-jury-knocks-columbine-probe/ |access-date=21 January 2023 |work=CBS News |date=2002-10-05}}</ref>

Over the next two years, Guerra's original draft and investigative file documents were lost. In September 1999, a Jefferson County investigator failed to find the documents during a secret search of the county's computer system. A second attempt in late 2000 found copies of the document within the Jefferson County archives. Their loss was termed "troubling" by a [[grand jury]] convened after the file's existence was reported in April 2001.<ref name=gjury>{{cite web |url=http://media.mnginteractive.com/media/paper36/Columbine_Grand_Jury_Report.pdf |title=Columbine Grand Jury Report |date=September 1, 2004 |publisher=District Court, City and County of Denver, Colorado |archive-url=https://web.archive.org/web/20040922095745/http://media.mnginteractive.com/media/paper36/Columbine_Grand_Jury_Report.pdf |archive-date=September 22, 2004}}</ref> It was concealed by the Jefferson County Sheriff's Office and not revealed until September 2001, resulting from an investigation by the TV show ''[[60 Minutes]]''. The documents were reconstructed and released to the public, but the original documents are still missing. The final grand jury investigation was released in September 2004.<ref name=gjury />