Sean Grayson, convicted in killing of Sonya Massey, dies in prison, attorney says
Summary
Sean Grayson, a former Sangamon County deputy convicted of killing Sonya Massey in 2024, died in prison while serving a 20-year sentence. He had Stage 4 colon cancer and was denied medical release before his death.Key Facts
- Sean Grayson was convicted of second-degree murder in October 2024.
- He killed Sonya Massey in her home after responding to a call for help about a possible prowler.
- Body camera footage showed Grayson shooting Massey; his own bodycam was mostly off during the incident.
- Grayson was serving a 20-year prison sentence plus two years of supervised release.
- He was battling advanced (Stage 4) colon cancer and requested medical release.
- The Illinois Prisoner Review Board denied his medical release last month, keeping him in prison.
- Grayson died in custody on a Sunday, according to his attorney.
- The Illinois Department of Corrections has not yet responded to requests for details on his death.
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