Former Illinois sheriff’s deputy sentenced to maximum 20 years for murder of Sonya Massey

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SPRINGFIELD, Ill. — Former Sangamon County sheriff’s deputy Sean Grayson received the maximum 20‑year prison sentence Thursday for the second‑degree murder of 36‑year‑old Sonya Massey, whose 2024 killing sparked statewide outrage and reform.

Deadly 911 Call Leads to Sonya Massey’s Murder Conviction

Massey, a Black mother of two, called 911 on July 6, 2024, to report a possible prowler outside her Springfield home. Grayson responded to the call and shot her inside her kitchen. Prosecutors said Massey complied when ordered to drop a pot of boiling water, contradicting Grayson’s claim that he feared she would throw it.

During Thursday’s hearing, Grayson admitted wrongdoing for the first time. He told the court he made “terrible decisions” and acted “very unprofessionally.” He also apologized to Massey’s family, saying she “didn’t deserve to be yelled and cussed at and called names.”

Sean Grayson Recieves Maximum Sentence

Judge Ryan Cadigan imposed the full 20‑year term allowed under Illinois law. The charge carries a sentencing range of four to 20 years. Under state law, Grayson may qualify for day‑for‑day credit, meaning he could serve half his sentence with good behavior.

Cadigan said Grayson’s actions showed “unreasonable force” and justified the maximum penalty. The judge also noted the lasting harm to Massey’s family and community.

Defense Raises Health Concerns

Grayson was diagnosed with stage 3 colon cancer in 2024, according to court filings. Before sentencing, defense attorney Mark Wykoff argued that imprisonment would endanger Grayson’s health because the cancer has worsened and spread. The court acknowledged the concern but determined the statutory maximum remained appropriate.

Civil Settlement and Family Support

Last year, Sangamon County agreed to a $10 million settlement with Massey’s family in connection with her death. A GoFundMe created by the family remains active to support ongoing needs and advocacy efforts.

Case Sparks Reform and Public Outcry

Massey’s killing led to protests across Illinois and renewed scrutiny of police hiring and training standards. Lawmakers later passed the Sonya Massey Act, which strengthens background checks for law‑enforcement applicants and expands oversight of officer conduct.