What happened the night of June 17, 2013
On June 17, 2013, Aaron Hernandez died by suicide in his prison cell at Souza-Baranowski Correctional Center in Lancaster, Massachusetts. Earlier that day, he had been convicted of first-degree murder in the shooting death of Odin Lloyd. His death came hours after a jury delivered the guilty verdict, which carried a mandatory sentence of life imprisonment without possibility of parole. This verified explainer outlines the timeline, the legal proceedings, and the medical conclusions about his mental health and CTE diagnosis after death.
Legal timeline and conviction details
Hernandez was arrested in June 2013 for the murder of Odin Lloyd, a semi-professional football player who was found shot near Hernandez’s home in North Attleborough, Massachusetts. In August 2015, a jury convicted him for the murder and related weapons charges. After the 2015 conviction, he was moved between correctional facilities and remained in restrictive housing due to safety concerns. He was awaiting appeal of the murder conviction at the time of his death in April 2017.
Key legal milestones
| Date or Period | Event | Why It Matters |
|---|---|---|
| June 17, 2013 | Hernandez arrested for Odin Lloyd murder | Triggered high-profile investigation and pre-trial detention |
| April 15, 2015 | Trial begins | Media coverage and public scrutiny intensified |
| August 9, 2015 | Convicted of first-degree murder | Mandatory life sentence without possibility of parole |
| April 2017 | Died by suicide in prison | Ended appeals process and fueled CTE research discussions |
Medical findings and cause of death
An autopsy performed by the Massachusetts medical examiner determined that Hernandez died by suicide asphyxiation and hanging. He was 27 years old at the time of death. Subsequent brain examinations revealed severe chronic traumatic encephalopathy (CTE), a neurodegenerative disease associated with repeated head impacts. This section explains how he died, the immediate medical determination, and how his brain donation advanced CTE science related to contact sports.
Medical and diagnostic summary
| Attribute | Verified Detail | Source Type |
|---|---|---|
| Official cause of death | Asphyxiation and hanging | Massachusetts medical examiner |
| Age at death | 27 years old | Coroner records |
| Prison location | Souza-Baranowski Correctional Center | DOC facility logs |
| CTE severity | Stage III chronic traumatic encephalopathy | Boston University CTE Center |
| Method | Self-inflicted asphyxiation by hanging | Autopsy and investigation reports |
Relationship between conviction and death
Hernandez’s death occurred while he was incarcerated and awaiting resolution of his appeal. The murder conviction was based on extensive evidence, including gun forensics, surveillance video, and witness testimony. His conviction and subsequent death intensified debates about the psychological toll of long pre-trial detention and prison conditions. Understanding how Aaron Hernandez died requires acknowledging both the legal finality of his conviction and the mental health crisis that preceded his suicide.
CTE findings and research impact
After Hernandez’s death, researchers at Boston University discovered the most severe form of CTE in a brain belonging to someone his age. This finding contributed to a broader scientific understanding of how repeated subconcussive hits may lead to cognitive decline, mood disorders, and impulse control issues. While CTE can only definitively diagnosed post-mortem, Hernandez’s case became a pivotal example in discussions about athlete safety, screening, and long-term brain health in contact sports.
Context and lasting significance
How Aaron Hernandez died is not only a matter of factual record—his death also shaped policy conversations in sports medicine, criminal justice, and mental health behind bars. It underscored the importance of suicide prevention in correctional settings and highlighted the need for longitudinal research on CTE. For investigators, clinicians, and the public, Hernandez’s case remains a reference point for understanding the intersection of brain injury, criminal behavior, and the consequences of professional athletics.
Summary of key facts
Hernandez died on April 19, 2017, in prison by hanging. He had been convicted of first-degree murder just months earlier. His death certificate listed asphyxiation and hanging as the cause, and his brain showed stage III CTE. These facts are widely reported by medical examiners, court records, and peer-reviewed research into CTE and head trauma.