Sean Grayson, the former Sangamon County sheriff’s deputy convicted last year in the fatal shooting of 36-year-old Sonya Massey, has died, his attorney said Sunday. Grayson was about six months into a 20-year prison term for second-degree murder when he died around noon, according to Daniel Fultz, who represented him at trial.
Medical history and prison status
Grayson had been diagnosed with Stage 3 colon cancer in 2023, which defense counsel said advanced to Stage 4 and spread to his liver, lungs and rectum before his sentencing in January. The Illinois Prisoner Review Board denied his request for medical release in July, and it remained unclear Sunday whether cancer was the direct cause of death.
Case background and video evidence
The shooting occurred shortly before 1 a.m. on July 6, 2024, after Massey called 911 to report a possible prowler at her home. Body-camera footage from Grayson’s response played a central role in the prosecution’s case at trial.
Prosecutors said that during the encounter Massey picked up a pot of boiling water from her stove—an action that led Grayson to step back. Grayson told jurors he believed a remark she made was a threat; prosecutors pointed to video showing him point his firearm at Massey and warn he would shoot. According to the prosecution, after Massey apologized and dropped to the floor, Grayson fired three times, fatally wounding her. Sangamon County authorities said Grayson failed to provide medical aid. Massey was pronounced dead at St. John’s Hospital in Springfield.
“'I'm sorry.' That is the last thing Sonya Massey said before the defendant murdered her, just like he said he would,”
First Assistant State’s Attorney Mary Beth Rodgers delivered that statement at trial as prosecutors described Massey’s final moments.
Aftermath: settlement and legislation
The shooting set off public protests and renewed scrutiny of policing practices in Illinois and beyond. In early 2025, Sangamon County officials agreed to a $10 million settlement with Massey’s family. Lawmakers also moved to tighten hiring standards for law enforcement.
Gov. J.B. Pritzker signed the Sonya Massey Act, legislation requiring more rigorous background checks for prospective law enforcement hires; the law took effect at the start of this year.
Timeline
| Date | Event |
|---|---|
| July 6, 2024 | Shooting of Sonya Massey after 911 call; Massey later pronounced dead |
| 2023 | Grayson diagnosed with Stage 3 colon cancer |
| January 2026 | Grayson sentenced to 20 years for second-degree murder; defense said cancer had advanced to Stage 4 |
| July 2026 | Illinois Prisoner Review Board denied Grayson’s medical-release request |
| August 2026 | Grayson died while serving his sentence |
Implications and questions remaining
Grayson’s death closes the criminal chapter of the case in a literal sense, but it leaves unresolved questions for Massey’s family and for broader debates over use-of-force policies and accountability in policing. The denial of medical release drew criticism from some legal observers who argued that advanced illness can warrant compassionate release; state authorities maintained the board’s decision in July followed its established standards.
- Conviction and sentence: Grayson was serving a 20-year sentence for second-degree murder.
- Health status: Diagnosed with colon cancer in 2023, which defense attorneys said progressed to Stage 4.
- Legal and policy fallout: The case prompted a $10 million settlement and the passage of the Sonya Massey Act tightening background checks for law enforcement hires.
Authorities have not released further details about the cause of death. Additional information from prison officials, the county state’s attorney’s office or medical examiners could clarify the circumstances surrounding Grayson’s passing.
