Sean Grayson Dies in Prison After Sonya Massey Conviction

Former Illinois sheriff’s deputy Sean Grayson died in prison around noon on Sunday, August 23, 2026, while serving a 20-year sentence for the 2024 fatal shooting of Sonya Massey inside her Springfield-area home, according to defense attorney Daniel Fultz.

Grayson, 32, had been battling Stage 4 colon cancer that progressed and spread to his liver, lungs, and rectum. Illinois Prisoner Review Board members denied his request for medical release in a 3-0 vote last month despite a 2022 state statute permitting early release for prisoners facing terminal illnesses.

The conviction stemmed from a July 6, 2024, emergency call in which Massey, a 36-year-old Black mother of two, contacted 911 to report a suspected intruder outside her home. Body camera footage captured the encounter inside the residence, during which Grayson directed Massey to remove a pot of hot water from her stove.

"I interpreted this to mean she was going to kill me," Grayson wrote in his official report regarding Massey's statement.

Grayson drew his weapon after Massey made a religious comment while holding the pot. Body camera audio recorded the exchange immediately preceding the gunfire.

"I rebuke you in the name of Jesus," Massey said.

Grayson threatened to shoot Massey before ordering her to lower the kitchenware.

"You better not," Grayson said, adding that he would shoot her.

As Grayson pointed his firearm, he issued a direct command to the resident.

"You'd better f***ing not. I swear to God, I'll f***ing shoot you right in your f***ing face," Grayson said.

Grayson continued shouting as he advanced toward the kitchen area.

"drop the f***ing pot!" Grayson said.

Massey retreated behind her kitchen counter moments before the fatal shots were executed.

"OK, I'm sorry," Massey said.

Prosecutors detailed the victim's final moments during court proceedings to highlight the nature of the attack.

"'I’m sorry.' That is the last thing Sonya Massey said before the defendant murdered her, just like he said he would," First Assistant State’s Attorney Mary Beth Rodgers said in court.

State officials confirmed Grayson declined to administer emergency medical aid following the shooting, and Massey was later pronounced dead at St. John's Hospital. Sangamon County State’s Attorney John Milhiser confirmed the denial of medical assistance in court statements.

Former deputy Dawson Farley, who responded alongside Grayson, testified during trial proceedings regarding his perception of the threat level during the encounter.

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, adding that he did not consider Massey a threat and drew his own weapon only after Grayson did.

A Peoria County jury convicted Grayson of second-degree murder in October, and Seventh Circuit Presiding Judge Ryan Cadagin sentenced him to the maximum 20-year prison term in January, followed by two years of mandatory supervised release. Cadagin later denied a motion to reconsider the sentence in May.

Following Grayson's death, legal representatives Ben Crump and Antonio Romanucci issued a joint response on behalf of the victim's family.

"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. Sonya's family knows that pain all too well and will grieve her loss the rest of their days," Ben Crump and Antonio Romanucci, Attorneys for Massey's family, said in a statement.

The fatal shooting led to systemic law enforcement shifts in Illinois, including the enactment of the Sonya Massey Act requiring enhanced background evaluations for police applicants. A federal civil rights probe by the U.S. Department of Justice resulted in an agreement requiring Sangamon County to expand mental health crisis training and establish a mobile crisis response framework.