RESOLVING THE LEDGER
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0 Share Newsweek is a Trust Project member See more of our trusted coverage when you search. Prefer Newsweek on Google to see more of our trusted coverage when you search. Sean Grayson, the former Illinois sheriff's deputy convicted of fatally shooting Sonya Massey after she called 911 to report a possible intruder, has died just months into a 20-year prison sentence.
His death comes weeks after Illinois authorities denied a request for medical release amid his battle with advanced colon cancer.
Grayson became nationally known in 2024 when body camera footage showed him shooting Massey inside her Springfield home. The killing sparked widespread outrage, led to a murder conviction and prompted reforms at the Sangamon County Sheriff's Office.
Grayson died on August 23 while in state custody, according to his attorney, Daniel Fultz. He was 32.
Although officials had not immediately released a cause of death, the former deputy had been battling Stage 4 colon cancer.
The Illinois Prisoner Review Board denied Grayson's request for medical release in July, despite arguments from his attorneys that his condition had significantly deteriorated. He died less than a month later while still serving his sentence.
Defense attorneys had argued Grayson was suffering from advanced colon cancer that had spread beyond its original site. During sentencing proceedings earlier this year, they sought leniency because of his condition.
Newsweek reached out to the Illinois Prisoner Review Board via email for comment.
Attorneys representing Massey's family said Grayson's death did not change the impact of the shooting on those he left behind.
"Grayson's death in custody from cancer does not bring Sonya back," attorneys Ben Crump and Antonio Romanucci said in a statement, adding that Massey's family will continue to grieve her loss.
Grayson was a former Illinois sheriff's deputy who became nationally known after fatally shooting Massey, a 36-year-old Springfield woman whose death triggered national debate over police accountability.
Before joining the Sangamon County Sheriff's Office in 2023, Grayson worked for a series of law enforcement agencies across central Illinois.
His résumé later became a focus of public scrutiny because he moved through multiple departments in a relatively short period. He served in part-time roles with the Pawnee, Kincaid and Virden police departments before later working for the Auburn Police Department and the Logan County Sheriff's Office. He joined Sangamon County in May 2023.
He became nationally known after fatally shooting Massey. Following her death, questions were also raised about Grayson's background, including prior DUI arrests that occurred before he became a police officer. Sangamon County officials maintained that he had undergone the required background checks and evaluations before being hired.
Massey was a 36-year-old Springfield, Illinois, resident and mother of two who called police for help on the night she was killed.
On July 6, 2024, Massey called 911 to report a possible intruder outside her Springfield home. Grayson and another deputy responded to the call.
After entering the residence and speaking with Massey, the interaction shifted toward a pot of boiling water on the stove. Body camera footage later showed Grayson drawing his firearm during the encounter.
Prosecutors said Grayson threatened to shoot Massey before firing as she apologized and ducked for cover. Grayson maintained he feared she was about to throw the boiling water at him.
The footage quickly spread across the country, drawing national attention and turning the case into o ne of the highest-profile police shootings in recent years .
Grayson was charged with first-degree murder, aggravated battery with a firearm and official misconduct following an investigation into the shooting.
He pleaded not guilty and argued that he acted because he feared for his safety. At trial, prosecutors contended that the shooting was unjustified and pointed to the body camera footage as evidence.
A jury ultimately convicted Grayson of second-degree murder in October 2025.
Under Illinois law, that verdict reflected a finding that Grayson believed he faced a threat, but that belief was unreasonable under the circumstances presented during trial. In January 2026, he was sentenced to the maximum 20 years in prison for the offense.
The shooting prompted widespread outrage and calls for greater police accountability. In early 2025, Sangamon County reached a $10 million settlement with Massey's family.
The county, Sheriff's Office and central dispatch system also entered into an agreement with the Department of Justice that included enhanced de-escalation training, expanded crisis-response programs, improved tracking of use-of-force data and reviews of policies related to policing and community engagement.
Contact Newsweek editors on this story: James Rushton and Emma Lee-Sang
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