Newport Beach Triple Homicide: Accused Killer's Delusional State Revealed in Court
Share- Nishadil
- October 07, 2025
- 0 Comments
- 2 minutes read
- 5 Views

In a harrowing Newport Beach courtroom, the grim details of a 2020 triple homicide are unfolding, painting a chilling picture of a family tragedy allegedly rooted in severe mental health crisis. Jurors are now grappling with the defense's astonishing claim that Matthew Taylor Coleman, 41, was in the throes of a profound "delusional mania" when he allegedly murdered his parents and their long-time maid.
Coleman stands accused of the brutal killings of his father, William Coleman, 71; his mother, Karen Coleman, 68; and their devoted housekeeper, Maria Corazon "Cory" Ramirez, 58.
The prosecution, led by Senior Deputy District Attorney Keith Burke, has laid out the case against him, but the defense, spearheaded by attorney Sarah Fisher, is presenting a starkly different narrative, arguing for an insanity plea.
According to Fisher, Coleman's mental state had deteriorated significantly in the days leading up to the November 2020 killings.
She revealed that he had just been discharged from a hospital, where he had been treated after an incident where he attacked his father. During this period, Fisher claims Coleman harbored the terrifying delusion that his family was "controlled by a demon that was going to destroy the world." In a desperate, twisted attempt to "save the world," he believed the only solution was to end their lives.
This defense seeks to convince the jury that Coleman was legally insane at the time of the murders, meaning he was incapable of understanding the wrongfulness of his actions due to a mental disease or defect.
The court was told of his increasingly erratic behavior, culminating in the horrific events that shattered the tranquility of the Newport Beach home.
However, the prosecution vehemently contests the insanity claim. Deputy District Attorney Burke acknowledges Coleman's history of mental health struggles but argues that despite his issues, Coleman understood the gravity and wrongfulness of his actions.
Burke points to what he describes as Coleman's attempts to cover up the crime—initially denying involvement to police and trying to wipe away evidence at the scene—as proof that he was aware of his wrongdoing.
The timeline of events shared in court paints a disturbing picture. On November 14, 2020, Coleman allegedly attacked his parents and Ramirez.
The following day, he was discovered wandering naked in his parents' backyard. The subsequent police investigation led to his arrest and the grim discovery of the three bodies.
The jury now faces the arduous task of weighing the evidence, examining the testimonies, and deliberating on the profound questions of culpability and sanity.
This trial delves into the complex intersection of mental illness and criminal responsibility, leaving a community grappling with the immense tragedy and the shocking revelations unfolding in the courtroom.
.Disclaimer: This article was generated in part using artificial intelligence and may contain errors or omissions. The content is provided for informational purposes only and does not constitute professional advice. We makes no representations or warranties regarding its accuracy, completeness, or reliability. Readers are advised to verify the information independently before relying on