A Kalamazoo County jury has convicted Dejaun Deandre Lee of first-degree murder for the fatal beating of his girlfriend, Mackenzie Soine, inside her Comstock Township apartment in January 2024. Lee, 28, now faces a mandatory sentence of life in prison without the possibility of parole.

The verdict, returned on June 13, 2025, followed a trial in which prosecutors laid out evidence of a prolonged and savage attack that left Soine, 25, with injuries so extensive that the lead prosecutor invoked the language of cinematic horror to describe them. Kalamazoo County Prosecuting Attorney Jeff Getting did not hold back after the conviction.

"This was something out of a horror movie. The level of violence inflicted on Mackenzie was beyond what most people could ever imagine."

A brutal end in a quiet township

Soine was found dead inside her apartment on East MN Avenue in Comstock Township on January 22, 2024. Officers with the Kalamazoo County Sheriff's Office responded to a welfare check at the residence. What they found, as True Crime News reported, was a scene of extraordinary violence.

An autopsy conducted by the medical examiner determined that Soine died from blunt force trauma. Her injuries included multiple skull fractures, broken ribs, and extensive bruising across her body. The medical examiner concluded that the injuries were consistent with a sustained beating, not a single blow or fall.

Lee was arrested on January 23, 2024, one day after Soine's body was discovered. He was identified as her boyfriend and had been living with her at the apartment. Investigators have not publicly detailed what specific evidence led them to Lee within that short window, but the timeline suggests authorities moved swiftly once they assessed the scene.

The case against Lee

Prosecutors presented evidence at trial that Lee and Soine had a volatile relationship marked by prior domestic violence incidents. Witnesses testified about previous altercations between the couple. The prosecution argued that the January 2024 attack was the culmination of an escalating pattern of abuse.

The jury heard testimony from law enforcement officers who processed the crime scene, medical professionals who examined Soine's remains, and witnesses who described the couple's relationship. Prosecutors emphasized the sheer number and severity of injuries as evidence that the killing was premeditated, meeting the threshold for first-degree murder under Michigan law. In Michigan, first-degree murder requires proof of premeditation and deliberation, meaning the prosecution had to show that Lee formed the intent to kill before or during the attack, not merely that he acted in a moment of rage.

Cases involving fatal domestic violence beatings have drawn increased public attention in recent years. In a separate case in Massachusetts, a university employee was charged with first-degree murder after allegedly beating his wife to death, underscoring a grim pattern that prosecutors across the country continue to confront.

Defense attorneys argued at trial that the evidence did not support a first-degree murder conviction. The specific defense theory has not been detailed in public reporting, but the jury ultimately rejected whatever alternative explanation was offered. Deliberations lasted approximately four hours before the panel returned its guilty verdict.

Victim's family speaks

Soine's family attended the trial and was present when the verdict was read. Her mother, Lisa Soine, addressed the court and spoke directly about the loss.

"Mackenzie was a beautiful soul who deserved so much more from life. No family should ever have to go through what we've been through."

Lisa Soine described her daughter as someone who loved animals and had dreams of pursuing a career in veterinary medicine. The family had expressed concern about the relationship before Mackenzie's death, though the specific nature and timing of those concerns have not been publicly detailed by investigators.

The emotional toll of intimate partner homicide cases extends well beyond the courtroom. A New York City jury recently convicted a man who shot and killed his ex-girlfriend while she walked with their baby, another case where a family was left to pick up the pieces after lethal violence by a partner.

Sentencing and what comes next

Lee's sentencing is scheduled for July 22, 2025. Under Michigan law, a first-degree murder conviction carries a mandatory sentence of life imprisonment without the possibility of parole. The judge will have no discretion to impose a lesser sentence.

Prosecutor Getting said his office was satisfied with the verdict and praised the jury for its careful consideration of the evidence. He also acknowledged the work of the Kalamazoo County Sheriff's Office in building the case.

"The men and women of the sheriff's office did outstanding work in this investigation. Their dedication to seeking justice for Mackenzie made this verdict possible."

Kalamazoo County Sheriff Richard Fuller echoed that sentiment, stating that the conviction should send a message about the consequences of domestic violence.

The severity of the injuries in this case drew particular attention from both prosecutors and law enforcement. When medical examiners document the kind of extensive trauma found on Soine's body, it often becomes a focal point at trial. In other high-profile cases, forensic findings detailing fatal injuries have played a central role in securing convictions.

A pattern the system keeps failing to stop

The Lee case fits a disturbing national pattern. Domestic violence homicides remain one of the most preventable categories of violent crime, yet they persist at staggering rates. Prosecutors and law enforcement officials frequently note that victims of escalating abuse face the greatest danger when they are in closest proximity to their abusers.

Witnesses at trial described prior incidents between Lee and Soine, raising questions about whether earlier intervention might have changed the outcome. Authorities have not publicly addressed whether prior domestic violence reports involving the couple were filed with law enforcement or whether any protective orders were sought or issued.

Domestic homicide cases involving intimate partners continue to surface across the country with troubling regularity. In Ohio, a former television contestant was indicted on aggravated murder charges in connection with his wife's death at their home, adding to a growing list of cases that force the justice system to reckon with lethal violence behind closed doors.

For the Soine family, the conviction offers a measure of legal closure but cannot undo what was taken from them. Mackenzie Soine was 25 years old. She will not pursue that veterinary career. She will not grow older. The system delivered accountability after the fact. Whether it could have delivered safety before it remains an open and uncomfortable question.

Lee will spend the rest of his life in a Michigan prison. For Mackenzie Soine's family, that is the law working as designed. For everyone paying attention, the harder question is why it had to work at all.