Sean Grayson, Sonya Massey’s Killer, Dies in Prison on August 23

Sean Grayson, the former Sangamon County sheriff’s deputy convicted of murdering Sonya Massey in her home, died Sunday at age 32 while serving a 20-year prison sentence. Grayson was diagnosed with stage 4 colon cancer that had spread to his liver and lungs. He had sought early medical release in May, but the Illinois Prisoner Review Board unanimously denied his request in late July. His death marks the end of a case that sparked national protests over police use of force.

What happened in the shooting

On July 6, 2024, Sonya Massey, 36, called 911 to report a prowler outside her Springfield-area home. Grayson and another deputy responded. Body camera footage showed Grayson directing Massey to remove a pot of boiling water from her stove. As she held the pot, Massey said, “I rebuke you in the name of Jesus.” Grayson threatened to shoot her, drew his handgun, and ordered her to drop the pot. Massey apologized and crouched behind her kitchen counter before Grayson fired three times, striking her in the face. She died that night at St. John’s Hospital.

The conviction and sentence

Grayson was charged with first-degree murder 11 days after the shooting. A jury convicted him of second-degree murder in October 2025 after he argued he feared Massey would throw the boiling water at him. He was sentenced in January 2026 to the maximum 20 years in prison, plus two years of mandatory supervised release. The other deputy at the scene, Dawson Farley, testified that he did not consider Massey a threat.

Cancer diagnosis and denied release

Grayson had been diagnosed with stage 3 colon cancer in 2023, before the shooting. By his sentencing, the cancer had progressed to stage 4 and spread to his liver, lungs, and rectum. In May 2026, six months into his sentence, Grayson requested early medical release under the Joe Coleman Act. The Illinois Prisoner Review Board rejected his request in late July, voting 3-0 to deny it. Sangamon County State’s Attorney John Milhiser opposed the release, citing Grayson’s advanced cancer diagnosis before the shooting and concerns about his temperament.

Massey family and legal response

Civil rights attorneys Ben Crump and Antonio Romanucci, representing Massey’s family, issued a statement Sunday: “Sonya Massey’s death was unjustifiable and she should be alive today. Sean Grayson’s death in custody from cancer does not bring Sonya back. We wish his family prayers of peace, as we do for all who grieve a loved one.” Massey’s family spokeswoman Teresa Haley told reporters the family felt relief. Massey left behind two children. The case prompted Illinois Governor JB Pritzker to sign the Sonya Massey Act, requiring stricter background checks for law enforcement officers.

Final Thoughts

Grayson’s death ends a case that exposed systemic issues in policing and sparked calls for reform. The Sonya Massey Act now requires stricter police background checks in Illinois, a direct legislative response to the shooting.

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