LOUISVILLE, Ky. (WDRB) -- Louisville Metro Police officially closed its investigation into the mass shooting earlier this year at Old National Bank in which five people were killed and eight others were injured.

LMPD released a 64-page document Tuesday, making public the details of the investigation, including background information on Connor Sturgeon, the bank employee who shot 13 of his colleagues April 10 before he was shot and killed by police.

The five bank employees killed in the shooting were Joshua Barrick, 40, a senior vice president; Deana Eckert, 57, an executive administrative officer; Tommy Elliott, 63, also a senior vice president; Juliana Farmer, 45, a loan analyst; and Jim Tutt Jr., 64, a commercial real estate market executive.

Police officer Nick Wilt, who rushed toward the building on Main Street with his partner, Officer Cory Galloway, was shot and critically wounded.

It was the deadliest mass shooting in Louisville since 1989, when Joseph Wesbecker killed seven people and himself at Standard Gravure, his former workplace.

Documents made public by LMPD on Tuesday include the Homicide Unit's investigative letter, the medical examiner's report on Sturgeon, his writings and the receipt showing what gun he purchased and location and date of the purchase.

The file includes a wide-ranging look at Sturgeon's mental health struggles, including a large collection of his personal writings on the days leading up to the April 10 massacre.

On the night of April 9, in his personal journal, Sturgeon wrote that something "snapped" the week prior, according to the file. He apologized to his family but hoped it would "send a message to those with power." In his rambling journal entries, he rails against Democrats, Republicans and even the National Rifle Association. 

In an earlier journal entry, he claimed the decision to carry out the shooting was an effort to "make an impact." He claimed it would prove to people how easy it was for someone with his level of history of mental illness to purchase a gun.

In its investigative file, LMPD released Sturgeon's receipt from that gun purchase. He bought it April 4 at River City Firearms on Preston Highway for $762.90. The day he purchased it, Sturgeon wrote of his plans to carry out the shooting, saying he "would not have been able to do this" were it more difficult to buy a gun.

In one of several 911 calls released by the city in the days after the shooting, Sturgeon's mother, whose name was edited out, frantically told a dispatcher that her son "didn't even own a gun." In a phone call lasting more than two minutes, Sturgeon's mother said her son was non-violent and "never hurt anyone; he's a really good kid."

An interview with Sturgeon’s family disclosed that he was in "active therapy for mental health issues and on various medication for mental health." He made no statements about hurting himself or others at an appointment the Thursday before the shooting, according to the file.

Family members also said during the interview that Sturgeon had attempted suicide the previous year and voluntarily checked into a hospital. The week before the shooting, Sturgeon told his mother that he wanted to take leave from his job because of a panic attack, but that he "could not pinpoint" what was going on.

Sturgeon wrote in an April 3 journal entry about his struggle with depression, including how he was unable to escape it through therapy, medications or other self-care methods, according to the file.

The next day, according to the receipt, he purchased the gun used in the shooting.

Sturgeon died after an exchange of gunfire with officers who responded, according to police. Galloway fired the fatal shot, police said.

Four days after the shooting, Sturgeon's family said they'd have his brain tested for chronic traumatic encephalopathy, the deterioration of the brain caused by repeated head trauma. The 25-year-old suffered two concussions playing football in 8th grade and one in 9th grade at Floyd Central High School in Floyds Knobs, Indiana, where he wore head gear when he played on the basketball team.

On Instagram, he called himself "Mr. Concussion."

The investigative file includes a post-mortem neuropathy consult from the Mayo Clinic conducted between May 18 and July 5, 2023. The detective in the report noted that consultation with medical experts involved with the examination of the brain determined CTE was not present.

Wilt, the rookie officer who first rushed toward the mass shooting and was shot in the head by Sturgeon, was released from the Frazier Rehabilitation Institute to go home nearly four months later.

Louisville attorney Tad Thomas, managing partner of Thomas Law Firm, represents the estate of one victim, and other survivors from the shooting. He plans to file a lawsuit against Radical Firearms, the gun manufacture that Sturgeon's gun was made by.

"We've seen in cases like this all across the country, and many of these mass shootings is that the companies that manufacture these firearms, these AR-15's, do marketing, specifically targeting people like the shooter in this particular case, and they do so with very graphic, very compelling marketing, Thomas said. 

Thomas also criticized the timing of the release of these findings. 

"I want to say shame on the mayor and the police department for releasing this file just a couple of days before Thanksgiving," he said. "These families were already going to have empty seats at the dining room table on Thanksgiving. So shame on them for bringing this up two days before Thanksgiving. There's no reason it couldn't have waited until next week." 

Related Stories:

Copyright 2023 WDRB Media. All Rights Reserved.