Police Magazine Logo
MenuMENU
SearchSEARCH

Experts Say Ballistics Confirm Louisville Sergeant was Shot by Breonna Taylor's Boyfriend, Not Fellow Officer

The ballistics report, part of the investigative file released Wednesday by Louisville Mayor Greg Fischer, shows that only one 9 mm bullet and cartridge casing was found at Taylor's apartment.

October 9, 2020
Experts Say Ballistics Confirm Louisville Sergeant was Shot by Breonna Taylor's Boyfriend, Not Fellow Officer

Louisville Metro Police Sgt. Jonathan Mattingly was hit in the femoral artery by a 9mm round after breaching Breonna Taylor's apartment. No officers on scene fired a 9mm, police say. (Photo: Louisville Metro PD)

2 min to read


Firearms experts say a ballistics report from Kentucky State Police shows Breonna Taylor’s boyfriend fired the shot that wounded a Louisville officer and prompted police to return fire, killing Taylor.

The authorities said the four-page report dismisses the theory that Sgt. Jonathan Mattingly was hit by "friendly fire" from his own officers and supports Attorney General Daniel Cameron’s conclusion that the 9 mm round that severed Mattingly's femoral artery came from the gun fired by Kenneth Walker.

Ad Loading...

The ballistics report, part of the investigative file released Wednesday by Louisville Mayor Greg Fischer, shows that only one 9 mm bullet and cartridge casing was found at Taylor's apartment. Walker had previously acknowledged firing one shot from his legally-owned Glock 9 mm handgun, Yahoo News reports.

Anti-police activists and Walker' s attorneys have claimed that Mattingly was shot by another officer involved in the raid

One of Walker’s attorneys, Steve Romines, said personnel records show fired Officer Brett Hankison was also issued a 9 mm pistol and may have used it during the search, shooting Mattingly. 

Official reports say the officers only fired .40 caliber pistols during the incident.

Charles Stephenson, a Kansas City-based firearms instructor and security consultant who is a former FBI agent, said in an email to the Courier-Journal that the recovery of a single 9mm bullet at the crime scene, together with Walker’s admission he fired one time, shows he must have been the shooter. 

Ad Loading...

Mattingly’s lawyer, Kent Wicker, has said it was “absurd” to think Hankison changed weapons during the shootout, in which officers fired 32 times. 

More Patrol

image of trooper, shown from waist down, standing beside a police cruiser along the road and at right a headline Slow Down Move Over.
PatrolMarch 19, 2026

Colorado State Patrol Releases 2025 Struck-By Analysis

The Colorado State Patrol, after analyzing its 2025 struck-by incidents, identified one area for improvement: using traffic cones to provide advanced warning before the cruiser's location. Here is the agency’s final data.

Read More →
Image of a group of men in business attire receiving an award set against a black background and a Streamlight logo up top.
PatrolMarch 19, 2026

Streamlight Names 144th Marketing Group Law Enforcement Sales Rep Agency of the Year

Streamlight has recognized the 144th Marketing Group as its 2025 Sales Rep Agency of the Year Award for the Law Enforcement market.

Read More →
Image of a group of men in business attire receiving an award set against a black background and a Streamlight logo up top.
PatrolMarch 19, 2026

Streamlight Names 144th Marketing Group Law Enforcement Sales Rep Agency of the Year

Streamlight has recognized the 144th Marketing Group as its 2025 Sales Rep Agency of the Year Award for the Law Enforcement market.

Read More →
Ad Loading...
DArk backgroundn with inset images of a fallen police officer and a ballistic helmet and headline Rife-Rated.
PatrolMarch 19, 2026

The Mission After the Moment

The mission of the Jorge Pastore Foundation is to support first responders through essential training, stronger community engagement, and mental wellness resources, all accessible and funded through donations, sponsorships, and foundation-led fundraising. It works closely with Team Wendy in the discussions about developing better protective gear for officers.

Read More →
Promotional graphic for Patrolfinder featuring a police chief’s headshot inside a circular frame alongside a police SUV in the background. The headline reads: “Built for Patrol: How One Police Chief Fixed Communication, Boosted Visibility, and Changed the Culture.”
SponsoredMarch 17, 2026

Built for Patrol: How One Police Chief Fixed Communication, Boosted Visibility, and Changed the Culture

Patrol work hasn’t changed—but the expectations on officers have. See how one police chief helped officers get the right information at the right time, improve patrol visibility, and strengthen trust without adding complexity or surveillance. This real-world story shows how patrol-driven technology can make the job safer, smarter, and more effective—starting on day one.

Read More →
Man in a blue blazer lifting his shirt to reveal a concealed handgun in a waistband holster while standing outdoors.
SponsoredMarch 2, 2026

Safariland Solis Rethinks Concealable Duty

What if Level I retention didn’t require a full duty rig? Safariland’s Solis delivers trusted ALS security in a streamlined OWB platform built for administrative and plainclothes professionals who need protection without the bulk.

Read More →
Ad Loading...
Woman kneeling with a Bloodhound in front of a white pickup truck.
PatrolMarch 1, 2026

K-9s Play a Critical Role in Finding Missing Persons

Real-world scenarios show that a tracking canine can detect and follow a human track several hours after it was made.

Read More →
Black background with image of police car light bar, logo for POLICE Topics, Tactics & Tips, and headline What are the latest law enforcement boots from Garmont Tactical?
Patrolby Wayne ParhamFebruary 25, 2026

Garmont Tactical’s LE Boot Lineup

In this video, we get a look at the latest law enforcement boots from Garmont Tactical, both for men and women. Kyle Ferdyn, sales manager, showcases four of the latest boots.

Read More →
Person in protective CMRN suit and breathing gear.
PatrolFebruary 18, 2026

Avon Protection Launches EXOSKIN-S2 High-Performance CBRN Protective Suit

With the commercial availability of Avon Protection’s EXOSKIN-S2, users now have increased options for their protective suit requirements across the spectrum of CBRN threat environments.

Read More →
Ad Loading...
Sky background with logos for Versatern and Aloft
PatrolFebruary 18, 2026

Versaterm Acquires Aloft to Unlock a New Era of Drones for Public Safety

Versaterm has acquired Aloft, an FAA-approved Unmanned Service Supplier (USS) that specializes in real-time airspace intelligence and flight authorizations.

Read More →