Sean Grayson, former Sangamon County deputy convicted in killing of Sonya Massey, dies in prison, attorney says
Sean Grayson, a former Sangamon County Sheriff's deputy convicted of murdering Sonya Massey in her home in 2024, died on Sunday. Grayson had been battling Stage 4 colon cancer.
Intelligence analysis by Llama

Sean Grayson, a former Sangamon County Sheriff's deputy, died in prison after being convicted of murdering Sonya Massey in 2024. Grayson was serving a 20-year sentence for the crime.
Sean Grayson was a police officer who shot and killed a woman named Sonya Massey in her home. Grayson was convicted of murder and died in prison while serving his sentence. He had been battling cancer.
Analysis
Background
Sean Grayson, a 32-year-old former Sangamon County Sheriff's deputy, was convicted of second-degree murder for the shooting of Sonya Massey in her home in 2024. Grayson was serving a 20-year sentence in the Illinois Department of Corrections, which was to be followed by two years of mandatory supervised release. Grayson had been battling Stage 4 colon cancer, for which he was undergoing treatment.
What Happened in the Sonya Massey Shooting?
In July 2024, 36-year-old Massey called police for help for a possible prowler outside her home. Grayson, along with another officer, responded to her home and spoke with her. While inside the home, Grayson said Massey began acting erratically and saying that she rebuked him 'in the name of Jesus' while walking towards a pot of water on her stove. Bodycam video from Grayson's partner captured the moment he shot Massey, who died of a gunshot wound. Grayson's body camera was not activated for most of the call, only turning on shortly after he pulled his weapon.
The Trial and Conviction
Grayson's former partner, Dawson Farley, testified during the trial that he was not afraid of Massey during the call, but instead feared Grayson. Farley told the jury that, while he was confused after Massey said 'I rebuke you in the name of Jesus,' he never perceived that as a threat. He added he only unholstered his gun because Grayson did. Grayson was found guilty last October of second-degree murder and was sentenced to 20 years in prison.
Key points
- Sean Grayson, a former Sangamon County Sheriff's deputy, was convicted of second-degree murder for the shooting of Sonya Massey in 2024.
- Grayson was serving a 20-year sentence in the Illinois Department of Corrections at the time of his death.
- Grayson had been battling Stage 4 colon cancer, for which he was undergoing treatment.
- The Illinois Prisoner Review Board rejected Grayson's medical release request and ordered him to remain in prison, despite the application citing advanced colon cancer.
The death of Sean Grayson brings closure to the family of Sonya Massey and may help them to heal from their loss. Grayson's death also serves as a reminder of the importance of police accountability and the need for officers to follow proper procedures when dealing with emergency situations.
The death of Sean Grayson does not bring back Sonya Massey, and her family will continue to grieve her loss. Grayson's death also raises questions about the justice system and whether it is fair to punish someone who is dying of cancer.

