The Brief Sean Grayson, the ex-Illinois deputy convicted of murdering Sonya Massey, was sentenced on Thursday. Sean Grayson, the former Sangamon County sheriff’s deputy who was convicted of second-degree murder for fatally shooting Sonya Massey in 2024, was sentenced to 20 years in prison on Thursday. Sonya Massey and Sean Grayson | ProvidedAfter the sentence was read, Massey's family members who were sitting in the court cheered "Yes!" Last year, Massey's family agreed to a $10 million settlement with Sangamon County over the shooting. CHICAGO, ILLINOIS - JULY 30: Donna Massey, the mother of shooting victim Sonya Massey, wipes away tears during a press conference at New Mount Pilgrim Church on July 30, 2024 in Chicago, Illinois.