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19-year-old pleads guilty to brutal 2025 murder of Maryland garden center owner

An Anne Arundel County man pleaded guilty to the brutal 2025 murder of 67-year-old Stephen Koza, who owned a garden center in Davidsonville, Maryland.

Jonah Michael Poole, 19, entered a guilty plea of first-degree murder. His sentencing is scheduled for June 26, 2026. 

Koza, the owner of Tropic Bay Aquatic Garden Center on West Central Avenue, was found dead in a burned vehicle in the business's parking lot on May 24, 2025.

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An Anne Arundel County man pleaded guilty to the brutal 2025 murder of 67-year-old Stephen Koza, who owned a garden center in Davidsonville, Maryland.

Kylee Dakes was also charged. Her trial is scheduled for June 2026.

Poole and Dakes were a couple, and they were scheduled to graduate from Southern High School a few weeks after the murder, according to charging documents.

Competency evaluation

In October 2025, a judge ruled that Poole was competent to stand trial after being evaluated by a doctor with the Maryland Department of Health.

Murder of a Maryland garden shop owner

On May 24, 2025, police were called to the Davidsonville garden shop for a vehicle that was engulfed in flames in the parking lot. 

Investigators said a body was found tied up and burned inside his pickup truck after firefighters extinguished the flames. The body was identified as Koza, who owned the store.

Police also found a crime scene inside the garden center, which indicated signs of a struggle.

Investigators said Koza was attacked around closing time inside the business. He was tied up, placed in the back of the pickup truck, driven to a gas station, and back to the parking lot, and was set on fire.

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On May 24, 2025, police were called to the Davidsonville garden shop for a vehicle that was engulfed in flames in the parking lot.  CBS News Baltimore

"It's extremely unusual, I think, for Anne Arundel County, especially this type of crime or any crime of this magnitude – this heinous type of crime," Anne Arundel County police spokesperson Justin Mulcahy said.

Police said surveillance video showed Poole wearing a Bass Pro Shop hat, which was found at the scene.

Poole briefly worked for Koza at Tropic Bay Aquatic Garden Center in 2024, police confirmed. 

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