Brian Keith Griffin admitted murder after prosecutors weighed mental health evidence and family wishes.
MARSHALL, Texas — A possible courtroom fight over Brian Keith Griffin’s mental health ended when he pleaded guilty to murdering his mother and accepted a 30-year prison sentence in Harrison County.
The plea resolved the November 2024 killing of Tammy Bogue, 55, without a jury trial. Griffin, 37, had faced a much higher possible sentence if convicted at trial. Prosecutors said the agreement reflected the evidence, the risks of expert testimony and the views of Bogue’s surviving relatives. Judge Brad Morin of the 71st Judicial District sentenced Griffin shortly after his guilty plea to one count of murder.
Griffin’s mental health history was raised at sentencing but did not stop the case from ending in a conviction. He told the court he had received mental health treatment several times and once after a suicide attempt. His defense attorney said Griffin had been found competent to stand trial. Griffin also admitted he was not insane on the day his mother was killed. Harrison County District Attorney Reid McCain said the case likely would have become “a battle of the experts” at trial, with each side presenting views about Griffin’s condition and responsibility. The plea avoided that fight and gave the family a fixed outcome.
The evidence described in court records was direct. On Nov. 27, 2024, Griffin called 911 shortly before 12:45 p.m. and reported what had happened at the apartment he shared with Bogue on Norwood Street in Marshall. Police arrived and found Bogue on the floor with multiple knife wounds. She was pronounced dead at the scene. In a probable cause statement, police said Griffin admitted during a custodial interview that he stabbed his mother multiple times and intended to kill her. Public records have not shown that another suspect was ever at issue.
The legal stakes were high before the plea. A murder conviction at trial could have exposed Griffin to up to 99 years in prison. McCain said prosecutors discussed the case with Bogue’s family more than once and that relatives were comfortable with a sentence in the 30- to 40-year range. He said they loved Griffin but believed accountability was still required. The final sentence of 30 years meant Griffin avoided the top end of possible punishment while still receiving a term measured in decades.
The family’s courtroom remarks pushed back against the idea that the case should be defined by Griffin’s mental health history. Bogue’s sister said Griffin should have taken his medication if he intended to blame illness for the stabbing. She called the killing a betrayal and said Bogue deserved to live, grow older and remain with the people who loved her. The sister also repeated what she said Griffin told investigators after the death: “She had to go.” She closed by telling Griffin, “Now you have to go.”
Bogue’s life was recorded in an obituary published days after the killing. It said she died in her hometown of Marshall and was loved by parents, siblings, nieces, nephews, grandchildren and friends. It described her as a woman who loved fishing, cookouts, family time, music and humor. She had been preceded in death by her husband, Wiley Bogue, and her daughter, Kristin Bogue. The obituary said her children and grandchildren were the center of her world.
The case began in an apartment on the 2700 block of Norwood Street, in a part of far East Texas close to the Texas-Louisiana border. Marshall police first responded to what became a murder scene on the day before Thanksgiving. The holiday timing deepened the impact on a family that soon had to arrange services and then wait for the criminal case to move through court. By the time Griffin entered his plea, the central trial questions had narrowed to punishment, mental condition and whether the family would have to sit through a full presentation of evidence.
The sentence Griffin received closed the Harrison County prosecution. As of April 27, 2026, no trial is scheduled because the guilty plea ended the case, and Griffin’s remaining process moves from the courthouse to state prison custody.
Author note: Last updated April 27, 2026.