Matthew Taylor Coleman Case: Charges, Medication Fight, Status

The Matthew Taylor Coleman case is the still-unresolved federal prosecution of a former Santa Barbara surf school owner who confessed to stabbing his two young children to death in Rosarito, Mexico, in August 2021, telling FBI agents he believed QAnon and Illuminati conspiracy theories had revealed that his wife passed “serpent DNA” to the children. More than four years later, Coleman has not been tried. A federal judge found him mentally incompetent, and he remains held at a federal medical prison in Missouri while the Ninth Circuit considers whether prison officials can forcibly medicate him to restore his competency.¹

What Coleman Did

On the evening of Saturday, August 7, 2021, Coleman, then 40, left the family’s Santa Barbara home with his two children, two-year-old Kaleo and ten-month-old Roxy, without telling his wife, Abby, where he was going. He drove them roughly 35 miles south of the U.S. border to Rosarito, Baja California.²

On the morning of Monday, August 9, workers at the Rancho Del Descanso agricultural ranch found both children dead. They had been stabbed with a spearfishing gun and had dozens of puncture wounds. Mexican authorities recovered the weapon, bloody clothing, and a baby’s blanket at the scene.³⁴

Later that same day, around 1:00 p.m., U.S. Customs and Border Protection agents stopped Coleman as he tried to reenter the country at the San Ysidro port of entry. He was alone in the family van, and agents found blood inside.²

During an FBI interview that followed, Coleman confessed. According to the federal criminal complaint, he said he had been “enlightened by QAnon and Illuminati conspiracy theories” and had received “visions and signs” showing that his wife carried “serpent DNA” she had passed to their children. He said the children “were going to grow into monsters” and that killing them was “the only course of action that would save the world.” He also acknowledged that he knew what he did was wrong, told investigators where to find the weapon, and identified the bodies.⁵⁴

Before the killings, Coleman was a Point Loma Nazarene University graduate who ran Lovewater Surf School with Abby and was known in Santa Barbara as a devoted father with no known history of mental illness. In the weeks leading up to the murders, reporting describes him falling into a delusional spiral, reading hand gestures in photographs as signals from an evil cabal and believing he was receiving messages from “Q.”⁶

The Federal Charges He Faces

Although the killings happened in Mexico, both victims and the accused were U.S. nationals, so the case was brought in U.S. federal court under 18 U.S.C. § 1119, which allows prosecution for the murder of American citizens on foreign soil.⁷ Coleman was charged in the U.S. District Court for the Southern District of California and pleaded not guilty on September 29, 2021. The case was assigned to U.S. District Judge Cathy Ann Bencivengo.⁸

In January 2023, federal prosecutors gave notice that they would not seek the death penalty. If convicted, Coleman faces a mandatory sentence of life in prison without the possibility of parole.⁸¹

Why the Case Has Not Gone to Trial

On October 11, 2023, Judge Bencivengo ruled that Coleman was not competent to stand trial, meaning he was unable to understand the proceedings against him or assist in his own defense. She ordered him committed for treatment at the United States Medical Center for Federal Prisoners in Springfield, Missouri, under 18 U.S.C. § 4241(d).⁸

A Bureau of Prisons psychiatrist who evaluated Coleman over 21 weeks diagnosed him with “Unspecified Schizophrenia Spectrum and Other Psychotic Disorder,” describing it as a “chronic condition that probably will not remit without antipsychotic medication.” Coleman refused to participate in the evaluations, and the psychiatrist noted the possibility that he was faking or exaggerating symptoms.⁹

The Fight Over Forcibly Medicating Him

In May 2024, federal prosecutors moved to involuntarily medicate Coleman under Sell v. United States, the 2003 Supreme Court decision that permits forced administration of antipsychotic drugs to a criminal defendant when the government shows important governmental interests are at stake, the medication is substantially likely to restore competency, less intrusive alternatives have been considered, and treatment is medically appropriate.¹⁰

An earlier administrative hearing had found Coleman did not qualify for involuntary medication under a separate standard because he was not “gravely disabled or a danger to himself or others in custody.” Prosecutors contested that conclusion, citing a late-2022 incident in which Coleman cut himself with a razor and slammed his head into the ground.¹⁰¹

In April 2025, Judge Bencivengo ruled that the government had satisfied all four Sell requirements and authorized prison officials to forcibly medicate Coleman. She immediately stayed her own order to let the defense appeal, and Coleman’s attorneys filed a notice of appeal with the Ninth U.S. Circuit Court of Appeals on April 25, 2025. The defense argued prosecutors had failed to prove forced medication would restore competency. A hearing on the appeal was scheduled for November 19, 2025, at the Ninth Circuit’s Pasadena courthouse.¹¹¹

Much of the clinical argument on both sides has been filed under seal. Case studies at the Springfield facility indicate that forced medication restores trial competency in roughly 80 percent of cases, according to reporting by the Santa Barbara Independent.¹

Where the Case Stands Now

As of March 2026, United States v. Coleman (3:21-cr-02627) is still pending with no trial date set. Coleman remains at the federal medical prison in Springfield, Missouri. He is represented by Federal Public Defender Christine Carr O’Connor, Elena Rose Sadowsky, Cuauhtemoc Ortega, and Sean Kevin Kennedy as learned counsel, and the defense has not publicly said whether it plans to raise an insanity defense at trial.⁸¹

Prosecutors have acknowledged that if Coleman is not brought to trial within the coming months, he could be civilly committed to a mental institution indefinitely, an outcome that would mean the man who confessed to killing his two children might never face a jury.¹

Abby Coleman, who told investigators she did not know the children were in danger when her husband drove them to Mexico, was never charged and has since moved to Texas to live with family. As of late 2025, the couple remained married.¹

1
Santa Barbara Independent. Still Seeking Sanity in the Matthew Coleman Case
2
NBC News. California Dad Killed His Kids Over QAnon Serpent DNA Conspiracy
3
NBC Bay Area. Federal Complaint Reveals Gruesome Details of Children’s Killing in Rosarito
4
NPR. Children Dead Father Claims QAnon Conspiracy Led Him to Kill
5
CNN. Father Kills Children QAnon California Mexico
6
San Diego Union-Tribune. Paranoia and Mash-Up of Conspiracy Theories Gripped Surf Instructor Before Child Killings
7
Cornell Law Institute. 18 U.S. Code § 1119 – Foreign Murder of United States Nationals
8
CourtListener. United States v. Coleman
9
San Diego Union-Tribune. Feds Move to Seek Involuntary Medication of Conspiracy Theorist Charged With Killing Kids in Rosarito
10
NBC San Diego. Feds Want to Medicate Santa Barbara Man So He Can Stand Trial for the Killings of His Young Children
11
San Diego Union-Tribune. Judge Orders Involuntary Medication of Conspiracy Theorist Charged With Killing Kids in Rosarito