A joint investigation by The Marshall Project and a team of Mississippi journalists revealed one of the most damning accountability failures in American corrections: at least 43 people were killed inside Mississippi state prisons between 2015 and 2025, but only eight murder convictions resulted from those deaths — and two of those eight came only after the news stories were published. The investigation prompted Mississippi Corrections Commissioner Burl Cain to announce in October 2025 that the agency would reopen and review every prison death going back to 2015.
The Scale of the Accountability Gap
The ratio is stark: 43 documented prison homicides, 8 convictions — a prosecution rate of roughly 19 percent, meaning more than 80 percent of people killed inside Mississippi state prisons since 2015 never had their killer brought to justice. In addition to the 43 confirmed homicides, investigators found another 21 prison deaths since 2015 ruled "undetermined" by the state medical examiner — a category that suggests cause of death could not be established definitively, a designation critics say is applied too broadly when the actual cause is violence that cannot be proven in the context of inadequate investigations.
The total of at least 847 inmates who died between 2015 and April 2026 — from all causes — reflects a broader mortality crisis. But the homicide accountability gap specifically reveals something about institutional priorities: Mississippi prisons were not treating the violent deaths of incarcerated people as crimes that required investigation and prosecution.
Commissioner Cain's Response
Mississippi Corrections Commissioner Burl Cain, who took over the department in 2022 after a troubled tenure at Angola prison in Louisiana, told the Marshall Project reporting team: "All the deaths that we've had since 2015, we're going back to revisit." Cain said MDOC's Criminal Investigations Division would examine each death that was not referred to a district attorney's office.
Three months after that announcement, however, reporters tracking the case found that there had been no additional indictments or convictions in the open homicide cases. The announcement had not yet translated into prosecutorial outcomes — which may reflect both the genuine difficulty of reopening cold cases inside prisons and questions about the institutional will to pursue accountability for crimes against incarcerated people.
The DOJ's Parallel Finding
The homicide investigation did not emerge in a vacuum. In 2022, the U.S. Department of Justice issued a preliminary report finding that conditions at Mississippi State Penitentiary violated the U.S. Constitution, including the prohibitions on cruel and unusual punishment and the guarantee of equal protection. A fuller DOJ report in 2024 went further, stating that Mississippi's Department of Corrections "allows" violence at several prisons — that gang control, gross understaffing, and poor supervision were not incidental failures but institutional practices that the DOC had effectively permitted to continue.
The "allows" framing is legally significant. It suggests that the DOJ found not just that violence occurred — which is unavoidable in any prison system — but that MDOC had the capacity to prevent it and did not. That is the standard for a constitutional violation: deliberate indifference to a known, serious risk.
Opacity as a Barrier
The Marshall Project investigation also exposed a systematic pattern of records obstruction. Public records requests to MDOC about inmate deaths were delayed, answered only in part, or denied outright. Mississippi's open records law — the Mississippi Public Records Act — applies to state agencies including MDOC, but the DOC had developed a pattern of non-response to even basic requests about deaths inside its facilities.
This opacity served to keep the accountability gap invisible. When families could not get answers about how their loved ones died, when reporters could not access records, and when the DOC was not referring cases to district attorneys, there was no mechanism for public accountability — until the investigation forced it.
What Families Should Know
If your loved one has died inside a Mississippi state prison and the circumstances were unclear or the stated cause was "natural causes" or "undetermined," the Cain announcement creates a documented opening to ask for your case to be included in the review:
- Contact MDOC's Criminal Investigations Division in writing, citing your loved one's name, DOC number, date of death, and the announced review. Request written confirmation that your case is included.
- Contact the Mississippi Center for Justice (mscenterforjustice.org) or the ACLU of Mississippi (aclu-ms.org) — organizations with capacity to support families seeking accountability.
- Contact the Marshall Project — the organization accepts tips and documentation from families whose loved ones died in prison as part of ongoing investigative reporting.
MDOC headquarters: 633 North State Street, Jackson, MS 39202. Phone: (601) 359-5600. Website: mdoc.ms.gov.