According to a review of his personnel file obtained by The Times, nearly all of the complaints against him were dismissed or deemed not credible. But one record in his file showed he was reprimanded at least three times, including for causing a car wreck in 2016 that fractured the spine of another officer.
During the shooting, Mr. Hankison was initially positioned behind other officers, but after Mr. Walker opened fire, he ran out of the breezeway into the parking lot and fired at least 10 rounds into the sliding-glass door and window of Ms. Taylor’s apartment.
Detective Joshua Jaynes, 38, has been with the Police Department since 2006, and had recently been assigned to the new Place-Based Investigations Unit, which was created in December 2019.
He prepared the five search warrant affidavits for simultaneous no-knock raids at locations suspected of playing a role in the local drug trade, including Ms. Taylor’s apartment. Lawyers for Ms. Taylor have said that the information tying her apartment to the drug trafficking syndicate was flawed and insufficient.
Detective Jaynes was placed on administrative reassignment in June amid the investigation into Ms. Taylor’s death, The Louisville Courier Journal reported.
Reporting was contributed by Mike Baker, Nicholas Bogel-Burroughs, Malachy Browne, Rukmini Callimachi, Robert Chiarito, John Eligon, Concepción de León, Richard A. Oppel Jr., Azi Paybarah, Dan Simmons, Derrick Bryson Taylor, Russell Goldman, Megan Specia, Mike Baker, Katie Gillespie, Deena Winter, Gillian R. Brassil, Sean Piccoli and Will Wright. Kitty Bennett contributed research.