Sean Grayson Dies in Prison at 32 Months Into 20-Year Sentence for Killing Sonya Massey

Sean Grayson, the former sheriff’s deputy who shot and killed Sonya Massey, has died.NBC Chicago

Sean Grayson, the former Illinois sheriff’s deputy convicted in the fatal shooting of Sonya Massey inside her Springfield-area home, has died while serving a 20-year prison sentence. He was 32.

Grayson’s attorney, Daniel Fultz, confirmed that his client died Sunday, Aug. 23, but initially provided no further details about the circumstances surrounding his death. Grayson had been battling advanced colon cancer, which his defense previously said had spread to his liver and lungs.

His death came only months after he began serving the maximum sentence imposed for his second-degree murder conviction — and shortly after an attempt to secure an early medical release was rejected.

Grayson was serving 20 years for Sonya Massey’s death

Grayson was six months into a 20-year prison sentence for fatally shooting Sonya Massey in her Springfield, Illinois, home in 2024.Tyler Pasciak LaRiviere/Chicago Sun-Times via AP

The case began on July 6, 2024, when Sonya Massey, a 36-year-old mother, called 911 because she believed someone might be outside her home near Springfield, Illinois.

Grayson, then a Sangamon County sheriff’s deputy, was among the officers who responded.

Body-camera footage later released by authorities captured the encounter inside Massey’s home. During an exchange involving a pot of hot water in the kitchen, the situation rapidly escalated. Massey crouched and apologized moments before Grayson fired at her.

Grayson maintained that he believed Massey might throw the hot water at him. The shooting generated nationwide attention and renewed scrutiny of police use of force.

He was subsequently fired and prosecuted.

A jury convicted Grayson of second-degree murder in October 2025, rather than the first-degree murder charge prosecutors had originally pursued. He was sentenced on Jan. 29, 2026, to 20 years in prison.

Advanced cancer and a request for medical release

The ex-deputy, whose colon cancer had spread to his liver and lungs, was denied an early medical release in July.Illinois State Police via AP

Grayson had been diagnosed with colon cancer before Massey’s death.

By the time he was serving his sentence, his condition had become significantly more serious. His attorneys said the cancer had reached an advanced stage and spread to other organs, including his liver and lungs.

His declining health became central to an effort to have him released from prison on medical grounds.

That request was rejected. Reporting from ABC7 Chicago says an Illinois Prisoner Review Board voted unanimously, 3-0, against granting Grayson medical release, leaving him in custody while undergoing his cancer battle.

Grayson died only a short time later.

His attorney confirmed the death but did not initially provide additional details. Reporting following his death has linked it to his cancer battle, while the earlier report provided by his attorney did not immediately elaborate on the circumstances.

Massey family responds to Grayson’s death

Attorneys Ben Crump and Antonio Romanucci, who represent Massey’s family, released a statement after learning of Grayson’s death.

They expressed sympathy for those mourning him while emphasizing that his death does not change the loss Massey’s family continues to endure.

“Sonya Massey’s death was unjustifiable, and she should be alive today,” the attorneys said, adding that Grayson’s death does not bring Massey back.

They also offered prayers of peace to Grayson’s family, noting that Massey’s loved ones understand the lasting grief that follows the death of a family member.

A case that extended far beyond the courtroom

Massey’s killing became a national story after the body-camera footage was released, prompting demonstrations and renewed questions about police hiring practices and the use of force.

The fallout also extended into government action. The case contributed to changes aimed at strengthening the vetting of law-enforcement hires, while a federal civil-rights investigation led to reforms involving law-enforcement practices in Sangamon County.

For Massey’s family, however, the focus following Grayson’s death remained on the woman whose call for help began the encounter.

Grayson had only served a fraction of his 20-year sentence when he died at 32. His death closes one chapter of the criminal case, but, as the family’s attorneys stressed, it does not alter the central tragedy: Sonya Massey lost her life inside her own home after calling authorities for help.