Indictment means possible life term for man accused of killing co-worker in Wright County workshop

One major labor organization noted that “violence like this rarely comes out of nowhere. It often follows a buildup that women in the trades know by heart.”

The Minnesota Star Tribune
December 8, 2025 at 4:41PM
Amber Czech (With permission from GoFundMe)

The man accused of killing a co-worker last month with a hammer in a Wright County workshop now faces a charge of first-degree murder and a potential life prison sentence in a slaying that drew outcry by advocacy groups for women in the trades.

A grand jury heard the case last week against David Bruce DeLong, 40, of Watkins, Minn., and indicted him on a charge of first-degree premeditated murder in connection with the attack in Cokato that killed 20-year-old Amber Mary Czech of Hutchinson, Minn.

The bludgeoning occurred on Nov. 11 at Advanced Process Technologies, which makes equipment used in food processing.

County Attorney Brian Lutes said the first-degree count carries a mandatory sentence of life in prison without parole. DeLong also faces a second-degree murder charge.

DeLong remains jailed in lieu of $2 million bail ahead of a court appearance Monday. The Minnesota Star Tribune has reached out to his attorney for a response to the allegations.

An online fundraising campaign started to cover funeral expenses noted that “Amber was a hardworking welder who took great pride in her craft and dreamed of building a bright future through her work. Her witty personality, positive attitude, and beautiful smile touched everyone who knew her.”

Numerous labor organizations decried the workplace killing of Czech, including the International Association of Sheet Metal, Air, Rail and Transportation Workers (SMART), with 230,000 members in North America.

“While not a SMART member ... this tragedy is reverberating across the trades community and far beyond,” read a statement from the organization. “So many tradeswomen and gender-diverse workers are carrying the weight of this news.”

SMART went on to point out that “violence like this rarely comes out of nowhere. It often follows a buildup that women in the trades know by heart: harassment shrugged off, bullying tolerated, intimidation minimized, warning signs dismissed, fear of backlash, comments ignored, jokes explained away, the stares of resentment, and behaviors everyone chooses not to see until they can no longer look away.”

The Laborers’ International Union of North America (LIUNA), which counts 500,000 workers across many industries among its ranks, said in a statement, “When a young tradeswoman’s future is so violently crushed, we must look to the criminal justice system to do its job — but as brothers and sisters in the construction trades we must also do much, much more. ... We must not only condemn the violence that took Czech’s life but also the attitudes and behavior that normalize an atmosphere of fear for too many construction craftswomen."

David Bruce DeLong (Wright County jail)

Around 6 a.m., a caller to 911 said Czech was bleeding heavily from a blow to the head, and there was a bloody sledgehammer on the floor nearby. Emergency medical responders arrived and declared her dead at the scene.

A sheriff’s deputy identified DeLong as the suspected attacker. DeLong said to a man at the business “something to the effect of, ‘I hit her with your hammer. She is by your toolbox. She is gone,’” the complaint read.

Sheriff’s deputies reviewed surveillance video inside the business and saw DeLong walk from his workstation to Czech’s, grab a sledgehammer and swing it. The victim was out of view of the camera.

DeLong’s swings indicated that he targeted her once while she was standing and four more times after she fell to the floor.

After his arrest, DeLong confessed to killing Czech. He said he didn’t like her and had been “planning to kill [her] for some time,” the complaint continued.

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about the writer

Paul Walsh

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Paul Walsh is a general assignment reporter at the Minnesota Star Tribune. He wants your news tips, especially in and near Minnesota.

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With permission from GoFundMe

One major labor organization noted that “violence like this rarely comes out of nowhere. It often follows a buildup that women in the trades know by heart.”

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